圈地自萌

quāndìzìméng
  1. (Mainland China, Internet slang, neologism) to indulge oneself within a niche interest in a secluded, self-contained manner, typically without promoting it in public
  2. to indulge oneself within a niche interest in a secluded, self-contained manner, typically without promoting it in public

Wiktionary

Entry Composition

1 圈地 quāndì
  1. staking a claim to territory
  2. enclosure
2 自 zì
  1. (bound form) self; oneself
  2. from; since
  3. naturally; as a matter of course
3 萌 méng
  1. (bound form) to sprout; to bud
  2. (coll.) cute; adorable (orthographic borrowing from Japanese 萌え "moe", affection for an anime or manga character)
  3. variant of 氓 méng