The day Fang Jie gave the order, their own demigod had already arrived.
They had a large space channel, so allowing a demigod through wasn't too troublesome. Otherwise, if they only had White Bone Tentacles, getting a demigod in would have been too difficult because the tentacles were quite fragile.
As for Fang Jie himself, he hadn't considered going there in person.
Although that would have made things easier, Fang Jie didn't want to cultivate such habits.
Otherwise, if he had to handle everything personally, it would be easy for someone to grasp his habits and use them to trap him. Just one successful ploy by an opponent could truly endanger him.
Of course, if necessary, Fang Jie would still take action himself, being the most formidable combat power in his territory.