

Xiaoyu was going to try and stop Jin herself, but the Zaibatsu pushed towards militarization, making it difficult to approach Jin. However, as head of the Mishima Zaibatsu, Jin Kazama aims to take Heihachi’s life. Ling Xiaoyu breathed a sigh of relief when she heard Heihachi had not truly died. an invitation to the King of Iron Fist Tournament 5. Under the condition that she will be first to use the machine, Ling pulls out the wadded scrap of paper in her pocket. Later, Ling happens to meet a brilliant scientist who claims that he can make a time machine as long as he gets the funding for development. "If only I could turn back time." Ling said with a hint of sadness and regret. When Ling heard of the death of Heihachi, a tear came to her eye. Hearing this, Ling began to believe that the root of all misfortune surrounding the Mishimas started with Heihachi's cruel upbringing of Kazuya. In the previous tournament, Ling was saved from the evil plans of Heihachi by Yoshimitsu, who taught her the history of the Mishima family. Ling is a high school student who is on a personal mission to save the Mishima family. Upon hearing the announcement of the next Tournament, Ling made the decision to enter - hoping to be reunited with Jin and to unveil the truth behind Heihachi and the Mishima Zaibatsu.

She believed the message and started to suspect Heihachi and the Mishima Zaibatsu. Ling’s intuition told her that Jin, who had been missing since the last Tournament, could have sent the message. Ling replied to the e-mail, but she did not receive any further messages from the anonymous individual. However, one day, she received an anonymous e-mail that warned her of Heihachi’s evil intentions and the danger to her life. But lacking any particular goals, Ling grew tired of her everyday routines. She still lived, studied and trained as a ward of the Mishima Zaibatsu. Ling was a junior at Mishima High School. Roaring with laughter, he promises to build the amusement park of her dreams if she wins the tournament. She threatened that she would go berserk again if he did not accept her challenge. Upon his arrival, Heihachi found his men beaten and strewn around the ship as if it was hit by a hurricane. Heihachi was not on board but Mishima's men discovered her soon after the ship left port and Heihachi was informed immediately. While vacationing in Hong Kong with her family, Ling stowed away on a yacht bearing the name, Mishima Financial Empire. Having learned that the Mishima Financial Empire is rich and powerful she seeks out Heihachi (president and CEO) to make her dream a reality. Many believe if she was more serious she could achieve real greatness. She is both young and small in stature but Ling is a skilled martial arts expert. Her dream is to build the perfect amusement park in China when she grows up. This girl loves amusement and theme parks. Xiaoyu's fighting style was brought on with some influence from her distant relative, Wang Jinrei. Ling Xiaoyu is also a schoolmate of Jin Kazama and Miharu Hirano. Ling Xiaoyu, born and raised in China, is a student at Mishima High School in Japan. But Chun-Li introduces to Jin in a flirtatious manner making herself angry further as Jin halts her to stop of what she was doing but roars like a cat to them when Jin tells them that he's not interested to their warrants. During their rival battle, She shows to be angry to both Chun-Li and Cammy to think they will seduce Jin with their tramp clothes and to steal it from her.

In Street Fighter X Tekken, Xiaoyu maintains her childish and energetic personality but being obnoxious to other female fighters that she needs to face. During the events in Tekken 6, her role becomes similar to Jun Kazama and wants to save Jin from being evil while in Scenario Campaign as the boss in Mishima Polytechnic, Xiaoyu shows her concern to Jin and does not want him to make any awful things as the latter does not want her concern and angrily makes her to fight him stating that she will not take it as his answer and he's not going anywhere. Xiaoyu appears to be childish, energetic and friendly to her schoolmates including Miharu and Jin and later Alisa. This outfit is a minor change outfit from Tekken 5: Dark Resurrection from pink to orange and becomes her primary outfit in Tekken 6 until it became as one of her customizations in Tekken 7. Xiaoyu wears an orange sleeveless modified qipao with white feathers on both of her shoulders, a white shorts with black and yellow lines in both sides on her shorts and an orange tutu shoes with black line designs.
