The King of Heaven's Blood has a very high position in the saints'clan. He is the left arm and right arm of Qin Shitian. Naturally, he knows the heart of the Holy Spirit very well.
If, as Ye Dun speculated, the Dark Protoss had taken full control of the heart of the Holy Spirit, they would not send people into the Palace of Heaven and Blood, but in fact, the Dark Protoss secretly sent people into the Palace of Heaven and Blood and was captured by Zuo Qiu-mei.
In this way, the dark Protoss still wants to get information about the heart of the Holy Spirit from the Temple of...