A large Cactus tree of about 3-4 meter tall. It's rare in Hong kong, hopefully someone can help on ID.
Probably Mission Prickly-pear (Opuntia ficus-indica) 梨果仙人掌
Resting on a waist length plant far from well traveled paths between the Lau Shui Heung and Hok Tau area, Pat Sin Leng mountains.
Found this moth at the Hok Tau camping site - Pat Sin Leng mountains inside the male restrooms.
靈芝屬 Ganoderma sp.
ID Credit : Dr.Alvin Tang
Answer from Peter T : 我看不是馬勃，(我不肯定，因不是專家)馬勃生在土表，有一層較厚外皮，內包孢子。相中的菌看来生在腐木上，結構上不似見到有一厚外皮。相中菌应為極幼體，需要継續長大才表露更多表徵。
連珠尾尺蛾 (Chiasmia emersaria)
Found a pair of Pallas's squirrel today. 赤腹松鼠嘉興亞種 (Subspecies Callosciurus erythraeus styani)
(學名 ： Callosciurus erythraeus styani)
赤腹松鼠嘉興亞種（學名：Callosciurus erythraeus styani），Thomas於1894年命名。在中國大陸，分布於江蘇、安徽、浙江、湖北等地。該物種的模式產地在上海與杭州之間。
Found this specimen in a public housing (backstairs) Fu Heng estate in Tai Po. The female was trying to protect and lay eggs. The specimen was removed and released in the open as probably cleaners would have destroyed the moth.