Thanks for the hint, Calalp.
I have just found a list at Avibase
https://avibase.bsc-eoc.org/search....ype=2&qlang=&qyears=&qauthors=Cheng&qinclsp=1
But I don't whether it is complete.
Note: The fossil form is described by another Cheng.
I've found 14 subspecies (one obituary states 15)
Dendrocopus leucotos tangi Cheng, 1956
Pteruthius ricketti lingshuiensis Cheng, 1963
Cyornis unicolor diaoluoensis (Cheng, Yang & Lu, 1981)
Pterorhinus courtoisi simaoensis Cheng & Tang, 1982
Sitta solangiae chienfengensis Cheng, Ting, & Wang, 1964
Dendrocopos major wulashanicus Cheng, Xian, Zhang, Y & Jiang, 1975
Tragopan caboti guangxiensis Cheng & Wu, 1979
Cholornis paradoxus taipaiensis (Cheng, Lo & Chao, 1973)
Treron sieboldii fopingensis Cheng, Tan & Sung, 1973
Ficedula sapphira tienchuanensis Cheng, 1964
Pomatorhinus ruficollis hunanensis Cheng 1974
Sinosuthora zappeyi erlangshanica (Cheng, Li & Zhang, 1983)
Lophura nyctimera omeiensis Cheng, Chang & Tang, 1964
Pterorhinus pectoralis pingi Cheng, 1963