C574 Hydrometer Checking

"Alright!"

Gu Chen nodded solemnly.

After instructing a few more things, he bid farewell to Yan Wan and left.

Yan Wan looked at the closed metal door in front of her, her heart unsettled for some unknown reason.

He always felt that something bad was going to happen.

"No, no, Gu Chen has arranged everything so well, nothing will happen to him."

Yan Wan consoled herself.

After all