C478 Provoke
Zhang Heng's stone not only saved his life, but also Xu Zhitian.
More than twenty stones of different sizes were pressed against the sunken floor.
As a result, when Xu Zhitian's feet left, the floor still caved in.
As long as this floor could not rise, the trap would not be triggered. Xu Zhitian and Zhang Heng would be safe.
"Phew