"The modern history of China began in the year of Gengzi". What year does "Gengzi" refer to?

The Boxer Rebellion, also known as the Boxer Rebellion, the Boxer Rebellion and the Boxer Rebellion, 1900. In the first year of the 20th century, Beijing ushered in the Boxer Rebellion which shocked the world. Due to the excessive bullying by foreign powers, the people of China aroused widespread dissatisfaction, which led to the rise of the Boxer Rebellion. With the call of "helping the Qing Dynasty to destroy the foreign countries", we pulled out telephone poles, destroyed railways, burned churches and killed people. The Gengzi Incident was a national xenophobic movement that China people could not bear the oppression of foreigners. It did not hesitate to fight the enemy's fire with its flesh and blood. Its patriotism was commendable, but its behavior was stupid. After this incident, the Qing court has become a candle in the wind. After being humiliated, the people of China are more eager to pursue the road of national rejuvenation, and they are indomitable towards this great goal.