When the Sun Shines(1990)

When the Sun Shines is a Hong Kong drama following Tin Kai-On as he relocates from his hometown and navigates family tensions with his father's new wife. Initially resentful, Kai-On gradually finds acceptance within his blended household. Living with a cousin who resents him, he forms an unlikely bond with his cousin's tomboyish sister and develops feelings for his neighbor, who at first rebuffs his advances. As Kai-On matures, his relationships deepen—his antagonistic cousin becomes a genuine friend, and a childhood rival joins their circle. The three eventually channel their newfound camaraderie into building a successful business together, transforming personal conflicts into shared ambition and mutual respect.