Walking into Hung Kwong Building, Sai Yang Choi Street, Mong Kok, after a long staircase to the end, you can see an inconspicuous small crimson sign with the words "Friends World Records" printed in gilding, and a poster pasted at the door. During the lecture on the new book titled "Remembering Chen Baiqiang like this", the classic songs of the 1980s were faintly heard in the room. Pushing the door and entering, the floor of less than 300 feet is filled with various audio components and sundries, and the densely packed vinyl discs on the cabinet are oddly neatly stacked;…