With the spiritual boat, it didn't take them long to arrive at the border.
When they arrived at the border, they naturally had to stop at the border checkpoint before heading into the wilderness.
Even if they had the support of Mu Bao Bao, they still needed to follow the rules of the Mu Empire. Otherwise people might think that they were looking down on the Mu Empire and misconstrue all kinds of things.
The trouble that came from that wasn't worth it, so it was easier for them to just follow the rules.
Of course, since they had a signed decree from Mu Bao Bao, it was easy for them to get through the checkpoint.
As for how they got that, it was because Lin Fan made a trade with the ministers.
They naturally wouldn't let Mu Bao Bao follow the Love Sect out into the wilderness, so Lin Fan had used that as part of a trade.
He would stop Mu Bao Bao from following as long as they allowed her to write this decree.