Chinese internet slang worth knowing (and where it comes from)

Chinese internet slang is its own dialect - part puns, part numbers, part protest - and it leaks into everyday speech constantly. A learner who only knows textbook Mandarin will read 666, see 内卷 in a headline and watch yyds in a comment thread with no decoder. Here is the working set.

The number codes

Chinese numerals sound like other words, so numbers do double duty:

• 666 (liùliùliù) - "smooth/skilled", from gaming: 六 sounds like 溜 (slick). Spamming 666 = applause.
• 520 - "I love you": wǔ'èrlíng ≈ wǒ ài nǐ. May 20th is an informal love day.
• 88 - bye-bye (bābā ≈ bye bye).
• 233 - laughter, from an old emoji sticker ID.
• 996 - the notorious work schedule: 9am-9pm, 6 days. Half complaint, half identity.

The letter codes

Pinyin initialisms: yyds (永远的神, "forever god" - the GOAT), xswl (笑死我了, "laughing to death" = lol), nsdd (你说得对, "you're right"), dbq (对不起, sorry). They read like license plates until the expansion clicks.

The memes that became vocabulary

• 内卷 nèijuǎn - "involution": competitive burnout where everyone works harder for the same reward. The defining word of the decade.
• 躺平 tǎngpíng - "lie flat": opting out of the grind.
• 摸鱼 mōyú - "feel for fish": slacking at work, from the idiom 浑水摸鱼.
• 破防 pòfáng - "defenses broken": emotionally shattered by a comment.
• 凡尔赛 fán'ěrsài - "Versailles": humble-bragging, from a manga about the French court.

Each of these - plus hundreds more like 芭比Q and 栓Q - lives in the internet codes and slang pill collections with the expansion, the origin story and a real example sentence. Internet slang dates fast; the collections are updated, and the ones worth learning are the ones that escaped the internet into normal speech.