QUICK BIO
Once the Twin Card was detected, Sakura dragged Meilin along. Sakura and Li tried teaming up, her using the Thunder Card and him using thunder. Unfortunately, the Twin caught on to the signals and was able to dodge it. Then she remembered. Li and Meilin had been training together since very young, so would be able to detect each other's moves like twins. Her idea was successful, therefore, she was able to capture the defeated Twin.

SOURCE: Card Captor Sakura
Ability: duplicate objects into doubles