Last Letter (2018)

Attending the reunion in lieu of her late elder sister, Zhihua accidentally runs into Yin Chuan, on whom she had a crush in her youth. As old memories are evoked Zhihua slowly uncovers the intricate story of the trio.

Last Letter is a drama movie featuring Zhou Xun.

Last Letter is currently streaming for free (ad-supported) on Freevee, Rakuten Viki and Tubi TV and it's also available on Fandor Amazon Channel, OVID and Rakuten Viki.

It is also possible to buy Last Letter on Amazon Video and Apple TV.