Although the younger sister played by Xu Xin was saved by Tangning's crazy character after arriving on the island, she was extremely cautious of her, especially when the two women set up camp in some thick grass. In the scene, Tangning's character fell asleep against a tree and the sister tried to knock her out and run away.
However, Xu Xin played this scene multiple times. As it was mainly psychological, most of the scenes were close ups. The scene of Tangning being hit was originally in the next scene, but Tangning told the director that she could act out both scenes together.
"Fine, Tangning can try both," the director said.
After listening to the director, Xu Xin's expression changed.
She wasn't sure if Tangning would take the opportunity to seek revenge on her.
So she said to the director, "Director, Tangning is going to hurt me!"