Sham Chun River
Japanese forces had been assembling north of the Sham Chun River since the beginning of December. The Japanese attack began at 06:00 when the IJA 230th, 229th and 228th Regiments (arranged from west to east) crossed the Sham Chun River. In the west the 230th Regiment advanced towards Yuen Long, Castle Peak Bay and Tai Mo Shan. In the center the 229th Regiment advanced from Sha Tau Kok towards Chek Nai Ping and across Tide Cove to Tai Shui Hang. In the east the 228th Regiment crossed at Lok Ma Chau and Lo Wu and advanced towards Lam Tsuen and Needle Hill.