(literary) how is one to know?

see 焉耆回族自治縣|焉耆回族自治县[Yan1 qi2 Hui2 zu2 Zi4 zhi4 xian4]

see 焉耆回族自治縣|焉耆回族自治县[Yan1 qi2 Hui2 zu2 Zi4 zhi4 xian4]

Yanqi basin in northeast of Tarim basin

Yanqi Hui Autonomous County, in Bayingolin Mongol Autonomous Prefecture 巴音郭楞蒙古自治州[Ba1 yin1 guo1 leng2 Meng3 gu3 Zi4 zhi4 zhou1], Xinjiang

absent-minded; preoccupied; inattentive; with one's thoughts wandering

(classical) see 於是|于是[yu2 shi4]

feeling surprised at sth

no greater contribution has been made than this (idiom)

I still have sons, don't I?; fig. future generations will continue the work