What is the name of the Hong Kong series about five coppers?

The man in the gossip detective has five copper coins, and when he runs out, he is dead.

Sitting down is an ordinary policeman, but he is not ordinary because his grandfather is famous in metaphysics. At every critical moment, he solved many mysteries, and his black and white friend Liang Xingqiu was an informant. His outstanding style often surprises his boss Che Jifei. Che Jifei has the qualification of an expert in criminal psychology, and everything depends on reason. The two seem to be diametrically opposed, but they gradually have a tacit understanding because of cooperation. However, Che Jifei is a housewife, and she only cares about the lifelong events of her sister Che Jimei and her brother Che Jijun after work. When Che Jimei fell into the triangle relationship between Liang Xingqiu and his subordinate Tie Liangzhi, Che Jifei lost control of his emotions, thanks to the help of sitting down.