There were two reasons why Lin Huang refused to accept Nine Gloom's surrender.
The first was that by killing Nine Gloom three times, he had obtained two Nirvana Tree card fragments and a complete Nirvana Tree card. He felt that he would be able to gain more by killing Nine Gloom.
The other reason was that he was unsure if Nine Gloom's surrender was just a strategy for a temporary compromise. He could give in briefly just to save his life and give them the castellan's seal fragment. He could also take back his words once he was safe, after Lin Huang and the other two had departed, and mobilize the entire inner world to kill the three of them.
From Lin Huang's point of view, letting Nine Gloom go was a risky choice.
Furthermore, he disliked trouble. Therefore, he made a safer, simpler decision.
A slash of his sword and Nine Gloom was dispatched once more.
The minute he revived, Nine Gloom immediately upbraided Lin Huang.
