Bird on Fire Chapter 28

"Hey, look at the bed leg, are there a few drops of red stuff?" Old Ma said, wearing reading glasses and pointing at the bed leg.

Feng Kai also leaned forward to take a look. There were a few drops of red Mark Chiefs with burrs on the bed legs, which looked like blood. However, the metal parts of the coffee table at the scene were all painted red, so it could not be ruled out that it was paint. Feng Kai said, "Do you have a reagent that can determine whether it is human blood with just one drop?"

Lao Ma looked at Feng Kai and said, "You know a lot. Benzidine, right? I don't have that."

"What should I do? Use a cotton swab to rub it and see if it can be rubbed off?"

Lao Ma nodded, took out a pack of cotton swabs from his survey bag, soaked one in water, and rubbed it a few times. The red Mark Chief on the bed leg was indeed rubbed onto the cotton swab.