Qián Lètiān 錢樂天, otherwise undocumented Qīng physician named in the meta of KR3eq079 Yīxué chuánxīn lù 醫學傳心錄 as the transmitter who obtained the secret manuscript (得秘本) of Liú Yīrén’s chuánxīn (heart-transmitted) didactic compendium. Not in CBDB. No standard biographical record located.