In 6 18 AD, in order to strengthen the traffic between the north and the south and consolidate the rule of the Sui Dynasty over the whole country, Yang Di sent a large number of laborers to dig the Grand Canal. There are Zhuo Jun (now Beijing) in the north and Yuhang (now Hangzhou, Zhejiang) in the south, with Luoyang as the central city. The Grand Canal is mainly divided into Yongji Canal, Tongji Canal, Hanjiang River and Jiangnan River. The opening of the Grand Canal in the Sui Dynasty strengthened the political, economic and cultural exchanges between the north and the south of the Sui Dynasty.
Summary:
★★★★ Running through the city: Zhuo Jun (now Beijing) in the north and Yuhang (now Hangzhou, Zhejiang) in the south, with Luoyang as the central city.
★★★★ Four channels: Yongji Canal, Tongji Canal, Hangou and Jiangnan River.
★★★★ Purpose: In order to strengthen the north-south traffic and consolidate the rule of the Sui Dynasty over the whole country.
★★★★★★ Influence: The political, economic and cultural exchanges between the north and the south of the Sui Dynasty were strengthened.