Zhang Zian was scared of the birds that suddenly flew by his head. He almost jumped, but then realized that it was nothing serious. Embarrassed, he rubbed his own head and looked at the staff member in front of him.
The staff member was wearing a light blue uniform and cap. He was wearing plastic shoe covers over his shoes and a badge on his chest. He took off his face mask to talk to Zhang Zian, leaving it hanging off one of his ears. He looked quite young, probably just freshly graduated from college.
There was some bird poop on his shoe covers. Zhang Zian realized that the ventilation in this birds' house was, in fact, great. He didn't smell any obvious bird poop. It was understandable. There were thousands of birds in the birds' house. If the ventilation was not good, PM2.5 would've gone up to a degree that is not suitable for humans to survive in.
"We are here to buy parrots. Do you have love birds?" Zhang Zian asked.