What really happened

A man clad in blue walked into the courtyard and when he saw the scarlet bee on the ground, his pupils shrunk.

"We've already been so secretive, how did someone notice us?" You Si, the guy who just entered the courtyard, said. 

"The things we had to do this time were more high profile than before. If not because we happened to see it, we wouldn't have noticed it either." Shi Chen said after coughing twice.

"Third Bro, you're not well. You should go back to the house and rest." Ni An Yi wanted to step forward to support Shi Chen, but Shi Chen waved his hands.

"Wu Fang, in any case, this body can't hold on much longer." Shi Chen knelt down and picked up and scarlet bee, toying around with in with his fingers, "Fourth Bro, do you know what this is? 

"An ordinary bee." Ni An Yi said.