Fickle woman
Fu Yu Sheng recovered by the evening maybe it was because of his constitution or maybe it was because of his excessive amount of Yang energy but he was completely fine after resting for a few hours. His recovery rate was so fast that even Song Yan was surprised by it, originally she wanted Fu Yu Sheng to stay at the hospital for the night but the latter refused saying that the bed was too uncomfortable and the ward smelled strongly of disinfectant, he went ahead and even said that he was feeling itchy because the hospital bed sheet was too dirty and he wouldn't be able to spend the entire night on it.
In the end, even if Song Yan wanted him to stay in the hospital, she couldn't forcibly make him stay, can she? So, in the end, she did as he wished and went out to do the discharge procedures.