6-Year-old Shen Nian'an pestered Chi Yi with a childish look on her face, "Brother Ayi, I just want to eat that marshmallow."
The 16-year-old Shen Nian'an frowned slightly and pouted, her cheeks puffed up like a little bun. "Chi Yi! I don't care, you just have to pay for my skirt."
But the youthfulness on 26-year-old Shen Nian'an's face has faded away, leaving only tiredness and empty eyes. "Chi Yi, you owe me more than just a child. You can't pay it back."
7-Year-old Chi Yi can pinch Shen Nian'an's face and then conjure up her favorite marshmallows.
17-Year-old Chi Yi would look at Shen Nianan with love in his eyes when she was angry and promise her anything.
But the angular face of 27-year-old Chi Yi is filled with indifference and alienation, and there are emotions in Shen Nian'an's eyes that Shen Nian'an can't understand: "Shen Nian'an, I owe you, but why don't you owe me?"