BY2 sisters, Miko and Yumi, once shone brightly in the entertainment industry with their hit songs like "爱丫爱丫" and "有点甜". However, they have recently changed their names to Sun Han and Sun Yu respectively. This decision has sparked curiosity among fans who are wondering about the reasons behind this change.

In 2019, BY2 announced that they would be leaving their record label, Sea Butterfly Music, and starting their own independent studio. The name change was seen as a fresh start for the duo. Despite the excitement around this new chapter in their careers, many fans were skeptical of their new names. While ordinary people may not attach much importance to names, for artists it can significantly impact one's future prospects.

The question on everyone's mind is: what is the connection between BY2 and Wang Likun? After Liang Le left Wang Likong (Wang Likun), she revealed that there was an unclear relationship between BY2 and Wang Likong. Several marketing channels also reported on messages exchanged between BY2 members on a chat app which hinted at flirtatious interactions with Wang Likong.

BY2 quickly refuted these allegations by reporting them to the authorities. In response to Liang Le's claims of providing evidence against Wang Likon but failing to do so due to lack of evidence regarding his infidelity or any relationship with BY2 members being proven true resulted in her being fined for contempt of court.