雙斑青步甲 Chlaenius bioculatus Chaudoir, 1856

About 18mm, bronze thorax, orange/black legs, orange spots at the rear of elytra are not as reflective as the one I saw in the bush yesterday.

Reference :
A Photographic Guide to Hong Kong Insects 香港昆蟲圖典 1st Edition 2014 P.230 - Hong Kong Entomological Society
http://taibif.tw/zh/namecode/330747