Where does “日喀則” come from?

日喀則 (Chinese) comes from Tibetan གཞིས་ཀ་རྩེ, from Tibetan རྩེ, from Proto-Sino-Tibetan r-tsjaːj — to play.

Ancestry of “日喀則”, step by step

Step	Language	Word	Meaning
1	Tibetan	གཞིས་ཀ་རྩེ	—
2	Tibetan	རྩེ	to play, to frolic, to disport oneself; peak,...
3	Proto-Sino-Tibetan	r-tsjaːj	to play