C2067 Xiao Chen Made His Move!
When the four of them joined forces, the old man didn't say anything.
This was also part of the rules, so he didn't interfere.
If they succeeded, it could be considered as them passing the test.
If the four of them were to join forces, the difficulty of the battle would naturally increase. This was inevitable, because this was a rule set by his master, and he had already thought of it long ago