As a servant, at least he did not have to die. He was not someone who would abandon his life for a little freedom and dignity. This was the cruel law of the cultivation world. Just like how he could disregard the lives of those few people from the Pure White Magic Academy for the sake of an Ice Flame Grass, it was only because he was stronger than the other party that he could naturally control the other party's fate. But now, it was only because he had met someone stronger.
Furthermore, the other party was a Great Archmage at the peak of his realm. If he became the other party's servant, he might be able to obtain more benefits and advance to a higher realm. It should be known that he had already encountered a bottleneck. No matter how hard he tried, he could not continue to advance. Perhaps, after he had acknowledged the other party as his master, the other party would help him advance. He consoled himself in this way.