As follows: 1. An ancient place name: Qianli Lake. The earliest written description of this place name is the Northern Song Dynasty's "Taiping Huanyu Ji" 90: "Liyang County Qianli Lake produces Ulva". Later, the Southern Song Dynasty's "Jingding Jiankang Zhi" stated "In Liyang

"Fifteen miles southeast of the county", there is an entry for Qianli Lake in all Liyang County annals in the past dynasties.

2. A traditional delicacy: Qianli Water shield soup, a Jiangnan specialty delicacy cooked with Water shield, an aquatic herbaceous plant of the Nymphaeaceae family, as the main ingredient.

Water shield has a delicious taste and is a delicacy in people's hearts. It has always been praised by literati.

3. An idiom allusion: Thousand Miles of Water Shield. This delicacy has been solidified into an idiom. It comes from the Southern Dynasty Liu Yiqing's "Shishuo Xinyu" "Lu Jiyi Wang Wuzi, Wuzi preceded several hugs of dendrobium cheese, pointing to Lu and said:

"How can Qing Jiangdong resist this?" Lu said: "There is thousands of miles of water shield soup, but no salt and black beans!" Introduction: It is also known as Qianli Lake and Jingxu Lake.

It is fifteen miles southeast of present-day Liyang City, Jiangsu Province.

"Huanyu Ji" Volume 90 Shengzhou Liyang County: "Qianli Lake produces Ulva. Lu Ji said: 'Thousands of miles of Ulva soup, without salt and black soy sauce.' Thousands of miles refers to the thousand miles of the thousand-mile horse. "Lu Shi Chun Qiu; Cha Jin" explains in detail that the road is far away

Or the area is vast. "Zuo Zhuan: The Thirty-Two Years of Duke Xi": "Zheng must know what the teacher did. Being diligent but doing nothing will be contrary to one's heart. If you travel thousands of miles, no one knows it."

"Lake refers to the large water accumulated on the land: lakes. Lakes. Lake beaches. Lakes. Lakes and mountains. Refers to China's Hubei and Hunan provinces: two lakes. Huguang. Refers to China's Huzhou (old place name, in today's Wuxing County, Zhejiang Province):

Lake pen. Lake crepe.