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HSK 5 | verb/noun | to overcome a barrier or achieve a significant advance

HSK 5 | noun | observable direction of development or change over time

HSK 5 | verb | to distribute and assign resources or personnel

We are given a string consisting solely of digits, and the task is to determine if the number "666" appears anywhere as a contiguous sequence inside that string. The output should be "YES" if it does, and "NO" otherwise.

HSK 5 | adjective/adverb | covering a large area or range; affecting many people or things

HSK 5 | verb/adjective | to make something more complete or perfect; fully developed

HSK 5 | verb/noun | to watch and control through continuous observation

HSK 3 | adverb | describes a recurring pattern observed from experience

木 (moku/boku/ki): tree. JLPT N5 kanji.

私 (I, private): 7 strokes, JLPT N5. On: シ. Kun: わたし、わたくし.

HSK 4 | verb / noun | to know (a person); to recognize; understanding

HSK 4 | verb | to estimate or anticipate a future outcome

HSK 5 | noun/adjective | the provision of medical treatment and health services

The task asks for the remainder when the sum of the first four multiples of a very large number n is divided by 5. In other words, you need to compute (1n + 2n + 3n + 4n) mod 5.

日 (day, sun): 4 strokes, JLPT N5. On: ニチ、ジツ. Kun: ひ、び、か.

HSK 3 | noun | a key for a lock; used for doors, cars, and safes

HSK 5 | verb / adjective | to summarize; concise

HSK 3 | verb + directional complement | to walk toward the speaker's location

HSK 3 | noun | the function, role, or effect that something produces

HSK 1 | noun | one's younger brother

HSK 1 | verb | to acquire something by paying money

HSK 1 | adverb | still (ongoing), also/in addition, even more

HSK 3 | noun/adjective/adverb | the natural world; being natural or obvious

Immersion techniques for Esperanto — Muzaiko radio, Vikipedio reading, Pasporta Servo travel, and the Universala Kongreso.

HSK 5 | noun | skill; practical ability acquired through training or practice

HSK 2 | verb + result complement | indicates writing is fully completed

HSK 4 | adverb | expressing a preference for one option over another

HSK 4 | noun | the outcome or impression produced by an action or cause

HSK 3 | verb | to lose a game, match, or contest

HSK 5 | verb/noun | fundamental shift in state or direction

Learn body part vocabulary, how to describe symptoms using 疼 and 痛, and how to soften descriptions with 有点儿.

JLPT N4 kanji 図 — readings, vocabulary, stroke order, mnemonic, and common confusion pairs.

N1 grammar pattern 〜とはいえ: acknowledging a stated fact while introducing a contrasting reality — 'even though, that said, granted that.'

Complete list of all 103 JLPT N5 kanji with stroke count, on-yomi, kun-yomi, meaning, and example words.

HSK 3 | verb / noun | to influence, affect; an influence or effect

HSK 4 | verb / noun | asking or specifying that something must be done or met

〜ように: JLPT N4 grammar pattern. Usage, structure, examples, and comparison with similar patterns.

HSK 1 | noun | question, problem, issue

HSK 3 | verb | to print (documents, photos) — used for printers and printing services

N1 grammar pattern 〜かたわら: expressing that someone pursues a secondary activity alongside a primary one — while also, on the side.

We are asked to calculate the sum of all integers $x$ that satisfy a pair of modular conditions with respect to two given integers $a$ and $b$.

HSK 4 | adverb/conjunction | happening together at the same moment

HSK 5 | verb/noun/adjective | to put in effort or resources; input; deeply absorbed

HSK 3 | verb / particle | to wait; and so on, et cetera (sentence-final particle)

HSK 6 | verb | to distill or extract the most valuable elements from raw material

HSK 2 | adjective | describes something of great significance or necessity

Master the vocabulary and structural patterns for formal Esperanto debate, including asserting, conceding, refuting, hedging, and expressing degrees of certainty.

HSK 3 | preposition | about, concerning, regarding — introduces the topic of a statement

Complete HSK 1 vocabulary list: 299 words with Chinese, pinyin, English, part of speech, and example sentences. Organized by category.

HSK 4 | verb | deliberately prioritizing or valuing something

HSK 3 | verb / noun | to have an allergic reaction; an allergy to something

HSK 4 | phrase | indicating that something deserves attention or is important to observe

HSK 3 | verb/adj | to concentrate or focus attention or resources

HSK 2 | adjective / noun | female gender; a woman or girl

HSK 1 | verb | to return, to go back, to come back

HSK 3 | noun / adjective | science; scientific

HSK 5 | noun | a standard pattern or model of operation or behavior

HSK 4 | n | the Olympic Games, held every four years

HSK 5 | noun | the principles of valid reasoning or the internal consistency of an argument

HSK 4 | noun | reference materials, data, or information sources

HSK 5 | noun | fan, follower; also glass noodles

HSK 2 | adjective | high in price; also used in polite forms of address

HSK 4 | noun / verb | a regular behavior or the state of being accustomed

HSK 4 | verb / noun | needing someone or something for support

HSK 5 | noun | the capacity to understand and make sense of information

HSK 4 | verb / noun | to show; to perform; performance; behavior

HSK 4 | noun | the outward shape, structure, or format of something

HSK 3 | conjunction | otherwise, or else — states what will happen if the condition is not met

HSK 2 | verb/directional complement | movement outward; also used as a directional complement

HSK 5 | noun | the supreme law of a country that defines government structure and rights

HSK 6 | verb | to examine closely in order to distinguish subtle differences

西 (セイ・サイ/にし): west. JLPT N5 essential kanji.

HSK 3 | adjective/noun | belief in one's own abilities

HSK 4 | noun | a specific area of activity, knowledge, or interest

万 (man/ban/yorozu): ten thousand. JLPT N5 kanji.

HSK 3 | verb | to remember something firmly; to commit to memory

Narrate past events fluently using sequence words, duration expressions, frequency adverbs, and past-time framing.

HSK 4 | noun | an online website or web presence

HSK 4 | verb | to approve; to authorize; to sanction

Learn 〜にもかかわらず to express contrast — an unexpected or contradictory result despite a real obstacle or circumstance.

出 (shutsu/sui/de-ru): exit. JLPT N5 kanji.

HSK 5 | noun phrase | content recommendation driven by algorithms

HSK 2 | adverb | negative imperative; commands someone not to do something

HSK 3 | noun | the measure or extent of something

HSK 3 | noun | the rules and structure of a language

語 (go/kata-ru): language. JLPT N5 kanji.

HSK 2 | adjective | describes the absence of dirt or mess

HSK 2 | adjective | describes doing something carefully and with full attention

HSK 1 | verb | to jump, to leap, to dance

Master six essential て-form compound patterns: 〜てしまう, 〜ておく, 〜てみる, 〜てくる, 〜ていく, and 〜てから — each expressing a distinct nuance of how actions relate in time, intention, and consequence.

HSK 5 | verb/noun | to spread information to promote a cause, idea, or policy

円 (yen, circle): 4 strokes, JLPT N5. On: エン. Kun: まる.

何 (what): 7 strokes, JLPT N5. On: カ. Kun: なに、なん.

HSK 5 | verb / noun | to sum up; to draw conclusions; a summary

HSK 4 | noun | teacher, instructor

We are given two arrays of integers, x and y, each of length n. The array x is the starting state, and y is the desired target state. The only operation allowed is x[i] ^= x[j], which replaces x[i] with the bitwise XOR of x[i] and x[j].

HSK 1 | verb | to sing

Learn 〜やすい (easy to do, prone to) and 〜にくい (hard/difficult to do) — N3 patterns describing inherent ease or difficulty of an action.

HSK 4 | adverb / noun | referring to a specific past moment

N1 grammar pattern 〜ならいざしらず: conceding that X might be understandable, but the actual situation (Y) is not acceptable or expected.