The Site of Pingying Regiment of Sanyuanli is in an ancient temple north of Sanyuanli Village in Guangzhou City of Guangdong Province.

After the Opium War broke out in June 1840, the British invaders continuously launched campaigns against Southeast China's coastal areas. In May 1841, the British army approached Guangzhou City, and seized hold of the emplacement in the north of the city. They often came out to disturb the people, irritating the masses in Guangzhou. On the morning of May 29, the British army plundered in Sanyuanli. The entire village quickly gathered on the level ground in front of the ancient temple. They resolved to fight against them. Afterwards, they allied with the crowd in No. 103 Township, and fought together with them under the banner of the Pingying Regiment. First, they allured the enemy to Niulangang, where nearly 10,000 people hid. They took the advantage of foothill and assaulted the enemy quickly. They annihilated over 200 enemies. The surrounded enemy fled helter-skelter to the emplacement when the reinforcing army arrived. The mass troop chased after them, and besieged the emplacement. The British army was forced back to the sea. The Battle of Resistance Against the British Army in Sanyuanli was the first victory of spontaneous fight of the Chinese people. It demonstrated the valor of the Chinese people in the fight against the imperialism and feudalism, and ushered in the democratic revolution.

After 1949, the government built the Site of Pingying Regiment in the ancient temple of Sanyuanli into a base for the patriotic education. The Sanyuan Temple, the source and headquarters for the battle, had been rebuilt to a memorial where the historical data of the battle was displayed.