Shi Xiu lost a whole 15 pounds by the time '4:30 P.M.' had finished filming! Her face—originally a little chubby with baby fat—had turned into a petite V-shaped face. Her personality had also undergone some changes—she was calmer nowadays than before. Like many new actors who'd taken part in their first movie, she was deeply immersed in her role and had difficulty completely separating herself from her character. Yun Nan and Mika were very experienced and carried out systematic psychotherapy on Shi Xiu.
Shi Xiu cried her eyes out at the film's completion party and expressed her gratitude to every cast and crew member for helping and taking care of her. Shi Nian had flowers and gifts sent to each and every person on the production team. Shi Xiu took the lead in teasing Yun Nan and singing praises to her brother, and Yun Nan generously accepted everyone's blessings.