Lu Xuan nodded his head as he knew that this was inevitable. The heavenly court had to think of a way to control the pathway up to the heavens. If everyone could use their tokens to enter and exit as they wished, the heavenly court wouldn't even know when they would be ambushed and killed.
Hence, the tokens sent out were all one-time-use tokens. Only immortal kings had the qualifications to freely travel between the mortal world and the heavenly court.
As for the others, if they didn't have such one-time tokens, they could only go to the capital of three thousand regions if they wanted to ascend to the sky. Only after passing through layers of tests in the capital, would they be able to open up the passage to the sky.
Not only was it cumbersome, but they also had to pay the money.
Of course, as a first-rate power, the Great Void Pavilion still had many of such one-time tokens in their hands, so they didn't have to collect them again and again.