Lang temple in Bao Thai village, Liem Can commune, Thanh Liem district is also known as Ninh Thai temple.
The Lang temple worship King Le Dai Hanh and his two sons as Le Trung Tong and Le Ngoa Trieu. In this area, there are many vestiges related to the life and career of King Le Dai Hanh such as Ma Dau area, Dan The area. Legend has it that King Le Dai Hanh's grandfather lived in Bao Thai village and he raised a white tiger, everyday he often goes to work in the field with it. One day, he went to work early, the tiger did not realize its owner so it had killed him and then carried him to the land before village gate. The next morning, many termites built a grave for him and from that everyone called it as Ma Dau.
Arriving at this Lang temple, visitors can visit the beauty of the temple and go to the top of the Coi mountain to see the vast plains where Le Hoan led the army to practice and fight the Tong Dynasty army in the 10th century.
Associated with the event of King Le Dai Hanh plowed land at the field in Doi Son (Duy Tien district) to encourage agriculture, expand farming land. Every year, on the Tich Dien Doi Son occasion (on 5th to 7th of lunar January), Doi Son people bring the incense of King Le from Lang temple to Doi Son to organize the festival.