There were several reasons why Han Yi wanted to participate in the Changsheng Fairy Meeting.
The most basic reason was that, for him, the Changsheng Fairy Meeting was only teleported between the two Immortal Courts, so the safety could be guaranteed.
The second point was that different venues were divided in the Immortal Convention, and the one he attended was naturally the Nascent Soul venue. In the Nascent Soul realm, Han Yi believed that his strength was not bad. Even if he encountered a Nascent Soul Peak cultivator, he could survive even if he was defeated.
These two points were the safety prerequisites.
The third point was that he discovered a problem during these ten years.
That was, if you want to cultivate steadily, you need to show your strength appropriately and have a certain reputation.
If one is too cautious, they may be directly used as cannon fodder in the Immortal Mansion.