In the end Feng Yuan still gave up on that suicidal idea. His power could definitely pull off a time-stop, but since it wouldn't be him directly casting it and it was "out-of-spec" power, once released he really had no idea whether it would spill over or not.
With this many Beastmasters crowded into such a small Challenge Point, if his power spilled over that'd be one hell of a mess. Thinking of that, anything that might affect the outside world basically had to be taken off the table.
The long line gave Feng Yuan plenty of time to think, and during that time he figured out how to handle it. Of course, even so there was no guarantee the Fluffy Fire Wolfhound would definitely pass the test. But… worst case, they'd just do it again. Either way, Feng Yuan had zero interest in making trouble here.
