How long did it take to build the forbidden city?

Question

PLEASE HELP!!

Answer 1

Built from 1406 to 1420

Edit:

Ha ha, Ricky beat me to it

Answer 2

The original forbidden city was built from 1406 to 1420. That means it took about 14 years to build it. Still the majority of the structures within the walls are post-18th century.

Answer 3

Built from 1406 to 1420, the complex consists of 980 surviving buildings with 8,707 bays of rooms[1] and covers 720,000 square metres.