Zhèng Sīxiào 鄭思肖 (zì Yìwēng 憶翁, original given name unrecorded; “Sīxiào” 思肖 — “thinking of [the character] Zhào 趙” — was the loyalist alias he adopted under the Yuán; hào Suǒnán 所南 “Towards-the-South-of-Where-I-Sit”, Sānwàiyěrén 三外野人, also known posthumously as Júshānxiānshēng 菊山先生) was the most uncompromising Sòng-loyalist (yímín 遺民) of the early Yuán generation. A native of Liánjiāng 連江 in Fúzhōu 福州 prefecture (the Sānshān 三山 of his collection’s title), he settled in Sūzhōu after the Mongol conquest and lived there in self-imposed seclusion until his death in 1318. He famously painted orchids without earth — “the soil has been seized by the barbarians” — and refused to sit facing north. His writings include the Xīnshǐ 心史 (Heart History), buried in an iron casket in a Sūzhōu well and recovered at the end of the Míng (its authenticity has been intermittently disputed); the Suǒnán wēng yībǎièrshí tú shījí 所南翁一百二十圖詩集 (the work transmitted as part of KR4d0331); and the Daoist liturgical compilation Tàijí jìliàn nèifǎ KR5b0251 in the Daozang. CBDB confirms 1241–1318. The hào Júshān 菊山 (“Chrysanthemum Mountain”) is well attested as a chrysanthemum-loyalist signum; he is among the most frequently cited yímín in the YuánMíng biéjí tradition.