HONG Kong's Willy Chan Lee took a step closer to an explosive showdown with Asia's most promising junior player when she advanced to the semi-finals of the Reebok Asia-Pacific Championships at Victoria Park yesterday. Chan beat Malaysian Khoo Chin Bee 6-3, 6-1 to set up a last-four encounter with tough Taiwanese Fan Chiang Yu-ming. Should she beat Fan, Chan could then face top-seeded Taiwanese Weng Tzu-ting, a 15-year-old who is tipped to follow in the footsteps of her world top-30 compatriot Wang Shi-ting. Weng reached the semi-finals with a 6-2, 6-4 victory over Indonesian Limanto and now takes on Japan's Yasuko Nishimata. Defending boys' singles champion Chen Wei-ju, also of Taiwan, advanced to the semi-finals with a 6-1, 6-0 victory over Indonesia's Surya Wijaya Budi and now faces Dante Sta Cruz of the Philippines. Hong Kong's John Hui, the second seed, was beaten 7-6 (8-6), 4-6, 4-6 by South Korean Kim Han-jo in the quarter-finals, ending the territory's interests in the boys' singles event. Kim meets his compatriot Chung Hee-seok in the semi-finals.