The Long-tailed sun skink (Eutropis longicaudata) is also called Long-tailed mabuya. It is 1 of 11 species of skinks in Hong Kong growing to about 40 cm.
Other than Hong Kong, it is also found in China, Taiwan, Malaysia, Indonesia, Thailand, Laos, Vietnam, and Cambodia.
See more of my encounters with Hong Kong Wildlife.
長尾南蜥, 長尾真稜蜥