by2 sisters, Miko and Yumi, have undergone a transformation not only in their names but also in their career trajectory. The once popular duo, known for hits like "Love Love" and "A Little Sweet," has now become a topic of discussion among netizens who are trying to understand the reasons behind their name change.

In February 2019, by2 announced that they would be changing their stage names to Sun Huan (Miko) and Sun Yu (Yumi), forming a new group called Huan Yu. According to sources close to the group, this decision was made after their contract with Sea Butterfly Music expired. The sisters decided to leave the company and establish their own work studio.

The name change sparked debate among fans who felt that the new moniker did not carry the same charm as by2. While it may seem insignificant for ordinary people, an artist's name can greatly impact one's career prospects in the entertainment industry.

As for by2's connection with Wang Likun (), there were rumors of an intimate relationship between Wang Likun and one of by2 members on social media platforms. However, these claims were quickly refuted by both parties involved. It is worth noting that Li Lian Jia () recently faced legal action due to her involvement in spreading false information about Wang Likun's extramarital affairs.

Despite all this drama surrounding them, it seems clear that both sides are focused on moving forward with their careers rather than dwelling on past controversies or personal relationships.