Why did Song Renzong introduce the childless emperor Song Renzong?

1. The reason why Song Renzong has no sons is that all his sons died shortly after birth. Song Renzong had three sons during his 4-year reign in history, but all three sons died at an early age, so that Song Renzong had to pass the throne to his adopted son in his later years.

2. Zhao Zhen of Song Renzong (May 3, 11-April 3, 163), whose first name was Zhao Benefited, was the fourth emperor of the Song Dynasty (reigned from March 23, 122 to April 3, 163), the sixth son of Zhao Heng of Song Zhenzong, and his mother was Li Chenfei.

3. During Zhao Zhen's reign, the economy of the Northern Song Dynasty flourished, and science, technology and culture also developed greatly. The History of the Song Dynasty praised: "Biography says:' Being a monarch stops at benevolence.' The emperor is sincere and innocent. Historians summarized his reign and the period of governing the country personally as "Ren Zong Sheng Zhi". He is good at calligraphy, especially at flying white books. There are 1 volumes of Imperial Collection. His poems are recorded in The Whole Song Poetry.