There's a scene between a man and woman in bed; they make out and plead that when the other person dies, that they'll follow them not feeling the loneliness of death. The man remarks feeling of being inside her lover's flesh and not just being a "beautiful spirit".
Cheng takes a shower; nothing explicit. She's only seen from the shoulders upward. Another time, the shot is seen from behind her bare back.
A woman goes to his boyfriend's apartment, where they excitedly rush into the bedroom - carrying the girl over his shoulders. They then disrobe their underwear, still clothed. Song Yu undoes his pants belt and then places himself over her crotch, where they copulate. This lasts about twenty seconds; nothing explicit is shown. They're later seen swinging around before dropping to the floor, tackling each other playfully.
The same man briefly reaches inside his lover's unbuttoned vest to clench her breast; no explicitness, but it's rather implied.
Cheng removes her coat for Song and she sits on the floor, clothed. The two then get together on the ground, admiring at each other. They then proceed to make out; Song going down from Cheng's neck to chest and then back to her neck. She then slaps him off.
A woman has a hallucination and then forcefully makes out with the man; she moans profusely. The two are clothed, so there's no nudity or explicitness.
Wah-Lei tearfully reconciles with Song Yu; she takes off her blouse, exposing her breasts. This is only kind of nudity in the whole film. The two momentarily make out.