As such they both showed a fierce and solemn face to Zhang Jian when he asked for them to return Wang Yan to her. In reality Zhang Jian didn't want the girls to bear the burden and just wasn't willing to let Wu Ming carry her. The only other options available to him was to either let the unconscious girl wake up before going back home or to carry her himself in which case they could have headed home promptly.
The bodies of the girls were still wet which could have caused them to get sick. Zhang Jian didn't want that to happen so he decided to carry Wang Yan himself so they could set course for home at once.