In some comic versions, the Joker's scars origin is a mystery or has multiple conflicting explanations. But in one common story, he claims they were from a traumatic event in his past.
The origin of the Joker's scars varies depending on the story. Sometimes it's due to a chemical accident; other times, it's part of a more complex and darker backstory.
In 'The Dark Knight', the Joker gives two different versions of how he got his scars. One version involves his abusive father. Another is related to his wife. However, it's hard to tell which one is true as the Joker is known for his chaos and deception.
Well, it could be that in the fanfiction, Percy gets into fights with Gabe over protecting his mother. Gabe, being the brute he is, might use a weapon or his fists, and Percy ends up with scars as a result. For example, he could try to stop Gabe from hitting his mother, and Gabe turns on him, causing injury that leaves scars.
Wu Zhu's chest was locked by Ye Qingmei. Only by using the five-stroke input method to enter Wu Zhu's name could the password be unlocked. Fan Xian successfully broke into the empress dowager's bedroom and stole the key. He inserted the key and entered the password to open the box with three layers of contents. The first layer was the best sniper rifle in the world. The second layer was a letter Ye Qingmei had written to Wu Zhu, describing her experience and what she wanted to say. She hoped that Wu Zhu would destroy the box after reading the letter to prevent it from falling into the wrong hands. The third layer was a letter to Fan Xian, mentioning Fan Xian's background and Ye Qingmei's origins. Thus, Fan Xian used the key and password to successfully open this mysterious chest.
Wu Zhu's chest was locked by Ye Qingmei. Only by using the five-stroke input method to enter Wu Zhu's name could the password be unlocked. Fan Xian successfully broke into the empress dowager's bedroom and stole the key. He inserted the key and entered the password to open the box with three layers of contents. The first layer was the best sniper rifle in the world. The second layer was a letter Ye Qingmei had written to Wu Zhu, describing her experience and what she wanted to say. She hoped that Wu Zhu would destroy the box after reading the letter to prevent it from falling into the wrong hands. The third layer was a letter to Fan Xian, mentioning Fan Xian's background and Ye Qingmei's origins. Thus, Fan Xian used the key and password to successfully open this mysterious chest.