If Zhang Tie had not fully recovered, he could ignore the black invitation cards aboveboard. However, Zhang Tie had not imagined that the fact that he had fully recovered in the Dongtian and carried out a performance with Yun Zhongzi inside there provided a chance for the three top sects to attack him.
The honor and fame of Iron-Dragon Sect and Jinwu Palace didn't belong to Zhang Tie alone. Therefore, Zhang Tie would not do anything to ruin the fame of Iron-Dragon Sect and Jinwu Palace, as which would turn those people on his side into a laughingstock.