Xia ping 'an ignored Liu yitiao, who was still in the cage. This was a warning to Liu yitiao.
He had used the mechanism technique to create that spider puppet to deal with Liu yitiao. It was a little insurance. If he were to enter the spirit world and return to Earth two days later, his main body would be in the same place as Liu yitiao in the beast cage. He had to have something that could deter Liu yitiao to prevent him from having other thoughts.
As for summoned creatures, they wouldn't stay in the plane for too long. The longest they could summon was three to five days before dissipating. They wouldn't be of much use. However, this spider puppet was different. It wouldn't be a problem even if it stayed here and watched Liu yitiao for eight to ten years.
