Pseudonym of the author of KR4k0272 Yījiè Jìng 醫界鏡. The pen name translates as “A physician in hiding among the literati” (rúlín 儒林 = the world of the literati; yīyǐn 醫隱 = a physician living in obscurity). The name alludes to Rúlín Wàishǐ 儒林外史, the great satirical novel of the literati world, signaling that the author intends a similar satire directed at the medical profession. No further biographical information is available; the name is not recorded in CBDB or standard biographical sources.