The reason Lin Ming did not plead for mercy right at the start was that he wanted his sister to be taught a lesson. Otherwise, he did not know what she would do in the future.
Lin Ming was a student and was about to take the Elementary Scholar Examination, so he still had some say in the village.
Since he had pleaded with the clan leader, the clan leader might reconsider. Moreover, he was punishing Lin Xue for what she had done to Lin Ming.
Lin Ming was a knowledgeable young man and he was also a student. He might become an elementary scholar, a high scholar, or even a scholar in the future. He was such a promising young man, but Lin Xue nearly ruined him. Naturally, he was unhappy, so she was punished more severely.
Now that Lin Ming was pleading for mercy, he went with the flow and made people stop.
Even so, Lin Xue's body had been hit more than ten times, and was seriously injured.
Lin Xue fainted when she saw her brother pleading for her.