C87 Dog and Man

They watched as Zhang Yunpeng and the rest walked to the entrance of a room and stopped. About a minute later, they walked in, and I guessed that it was Zhang Meng who opened the door for them.

"What on earth are these two doing here?" My heart was filled with curiosity. After a while, I secretly walked towards the door of that room.

I looked at the room number 607, and with great dexterity