Fortune Telling Collection - Ziwei fortune-telling - Who is the elder sister, Ziwei or Swallow?

Who is the elder sister, Ziwei or Swallow?

The swallow is her sister,

When they took the oath, Wei Zi said it was the second day of August in Ren Xu.

The swallow said that she only knew that she was born in Ren Xu, and then she said that she was born in early August and became a sister.

Qianlong discovered that the swallow was his daughter because of his first birthday in August ~