I forgot the name of a Hong Kong movie we watched together, only remembering a little plot. Can you help me think about it?

There is a drunken night in Lan Kwai Fong, where men and women in the city like to have fun and lead a colorful life. Photographer Rain (played by Guan Chuyao) met the rich girl Summer (played by Lian Shiya) at the party, and they hit it off immediately. Although their identities are quite different, they don't mind and still love each other very much. However, the ex-boyfriend of the rich girl got in the way, which led to cracks in their feelings. The woman even broke up suddenly, which was unacceptable to the photographer ... After working for an advertising company's "Lan Kwai Fong USB”Don (Shen Zhenxuan), she took someone else's mobile phone by mistake and found that it was full of sexy selfies, trying her best to date the owner. After many twists and turns, I finally met my enthusiastic host Siri (Liu Yuqi), and they hit it off immediately ... The waiter Avis (Chen Weicheng) always accompanies his boss Yepp after work every night, but he only takes this as a routine job and doesn't like to meet the opposite sex. But when he met QQ (Chen Jingyi), she was abused by her boss, so she fell in love with her. Once, I couldn't bear to see her being played by her boss. In a rage, I went out to teach her a lesson and took her away. Private Zhong Mei was greatly moved by the waiter's heroic behavior, and then there was a one-night stand ... Police officer Xu (He Haowen) patrolled Lan Kwai Fong every night, but he hated this place very much. On the contrary, DJ Maxim (Matsuoka Rina) is an evening show host. She likes the lively atmosphere and her work here. Two people with diametrically opposite personalities often meet. The two often use various origami to express their feelings on the patrol sign-in book ... Can four different love stories escape the law of "no true love at night"?