Duckweed

Deng Chao

邓超

as Xu Tailang

Eddie Peng Yu-Yan

彭于晏

as Xu Zhengtai

Zhao Liying

赵丽颖

as Xiao Hua

Dong Zijian

董子健

as Xiao Ma

King Shih-chieh

金士傑

as Director Jin

Zhang Benyu

张本煜

as Luo Li

Li Ronghao

as Huang Zhiqiang

Zack Gao

高华阳

as Liu Yi

Mason Lee

as Ah Jun

Zhang Guoqing

张国庆

as Ramen Shop Owner

Sun Qiheng

孙启恒

as Officer Sun

Sun Yihan

孫伊涵

as Song Zi

Li Chunai

李春嫒

as Xiao Chun

Fang Li

as Bath Center Boss

Leng Haiming

as Ambulance Doctor

Xiong Li

as Jia Yi

Bai Luoli

白珞力

as Luo Li's Younger Brother

Peng Feiming

彭菲茗

as Fei Fei

Jia Chuanxi

贾川西

as Ah Lang's First Girlfriend

Li Zhu

朱莉

as Karaoke Girl

Chow Yun-Fat

周潤發

as Self (archive footage)

Pan Mi

潘米

as Primary School Student

Chen Jiayi

as Miss KTV

Han Han

韩寒爷爷

as Old Man on the Rooftop

Li Chenya

李郴亚

as Guard / Disinfection Staff