20 Once Again[4][5][6] (Chinese: 重返20歲; pinyin: Chóng fǎn èrshí suì) is the 2015 South Korean - Taiwanese - Chinese comedy film directed by Leste Chen and starring Yang Zishan, Gua Ah-leh, Bolin Chen and Lu Han.

[9] Shen Meng Jun (Gua Ah-leh) is a crotchety prideful 70-year-old widow who frequently finds fault with everyone around her.

She takes pride in her ability to raise her son single-handedly, despite the poverty during the Cultural Revolution, to become a professor of a prestigious university.

She shows her bias towards her grandson Xiang Qian Jin (Lu Han) because he aspires to become a musician and he represents a dream that Meng Jun cannot achieve herself.

Feeling forlorn, she wanders the streets and impulsively decides to take a final portrait at a photo studio she happens by.

She begins by renting a room from her trusted friend and past servant, Li Dahai (Deshun Wang).

The wife of Guo Bin, mother of Qian Jin and Xin Ran and daughter-in-law of Meng Li Jun.

The granddaughter of Meng Li Jun who treats her with contempt due to the stress she had put her mother through.