《宋书·志·卷二十三》
盖天说传言是周公旦从殷商而得，遣大概是假托之说。
盖天之术，云出周公旦访之殷商，盖假托之说也。
The Gai Tian theory is said to have been obtained by Zhou Gongdan from the Shang dynasty, but this is probably a false claim.
<s>[INST] Identify the key themes in this Classical Chinese text and explain them in English: 盖天之术，云出周公旦访之殷商，盖假托之说也。 [/INST] The Gai Tian theory is said to have been obtained by Zhou Gongdan from the Shang dynasty, but this is probably a false claim.</s>
Identify the key themes in this Classical Chinese text and explain them in English: 盖天之术，云出周公旦访之殷商，盖假托之说也。
user
The Gai Tian theory is said to have been obtained by Zhou Gongdan from the Shang dynasty, but this is probably a false claim.
assistant