Fu Tingyan dislocated his arm when he was trying to save Jing Yu from being hit.
His dislocated arm severely reduced his strength. Therefore, the hooligans were able to break his rib.
Thanks to Fu Tingyu for making Fu Tingyan practice martial arts.
If Fu Tingyan had not martial arts like Jiang Yu, the two of them would probably be beaten even more miserably.
Fu Tingyu was quite protective of his brother. Although Fu Tingyu always mocked Fu Tingyan in front of Shu Qin, in his heart, his younger brother was very important.
So naturally, anyone who laid a finger on Fu Tingyu's brother would have no good ending.
Fu Tingyu would return any harm tenfold or even hundredfold.
However, Fu Tingyu would tell Fu Tingyan that he got beaten so badly because he was not strong enough and deserved it.
If Fu Tingyan was strong enough, he'll be the one beating others up.