They had grew up and graduated. Chou Tzuyu is the nation's sweet heart and hopes of winning their first women swimming gold medal in Olympics.   Sana undoubtly grown more beauty and very intelligent. At the age of 21, she had already make a name in Paris as the most youngest fashion designer invited to the Paris Fashion Week and already launching her own brand; "Sapphire" with her business partner and also her college roomate, Im Nayeon. She's the brain while Nayeon the money