Why is he touching her lips?

In the room, only the voice of a pen moving on paper and a clock's ticking can be heard. 

Holding the pen, was a beautiful woman. 

Her jade-like white skin and pure black hair shone under the light of the lamp. It also highlighted her features, and her long eyelashes made her eyes admirable. 

The woman stopped her pen, and yawning, she glanced upon the wall clock, which showed the time 4 in the morning. 

Wang Yu Yan got up from the seat and walked towards the window that showed the outside view. 

Even though the sun was near the horizon, the hustle and bustle on the roads was still as youthful as ever. 

Glancing at the watch once again, Wang Yu Yan proceeded towards the I.C.U. where Liu Roulan was. 

As she walked through the hospital corridors, every corner of the hospital was peaceful. 

Reaching the I.C.U., Wang Yu Yan opened the door, only to see Li Wei working on his laptop.