Zhu Dan posted the most beautiful photos of Sister Sina, wearing a denim suit with half tied hair, beautiful and sassy! Zhu Dan posted the most beautiful photos of Sister Sina, wearing a denim suit with half tied hair, beautiful and sassy! Zhu Dan posted the most beautiful photos of Sister Sina, wearing a denim suit with half tied hair, beautiful and sassy! Zhu Dan posted the most beautiful photos of Sister Sina, wearing a denim suit with half tied hair, beautiful and sassy!