Hong Kong stocks opened lower, with the Hang Seng Index down 0.65% and the Hang Seng Tech Index down 0.88%. Zijin Mining (02899.HK) opened down 3.51%, while Sunny Optical Technology (02382.HK) opened up 3.1%, after announcing that it expects its net profit to increase by 70%-75% year-on-year in 2025.