Tian Jingzhi took the beaker in horror, with a disgusted expression on his face: "Has this beaker ever contained those strange things in the microscope?"

"Of course not, clean. It's convenient to make coffee with an alcohol burner, which is what we usually do."

Tian Jingzhi took a sip and nodded with satisfaction, "Your coffee making skills are good, and the taste is very special."