C623 There be a Problem with the Seed

"It does sound a bit whimsical, but it's not completely impossible." Li Xin laughed.

Li Shimin suddenly recalled that he remembered hearing Li Xin say that in the world of immortals, a giant bird made of steel could carry people into the sky … That thing seems to be called a flying chicken?

A chicken or a plane?

Li Shimin was a little uncertain.

Li Xin did not know what Li Shimin was thinking