REMOVE

1. gates
2. 14th century

WHAT

1. architecture (object genr … (3)

WHERE

1. China (nation) (3)
2. Beijing, China (1)
3. Luoyang, China (1)

WHO

1. unknown Ming (3)

WHEN

1. 15th century (3)
2. 16th century (3)
3. Ming (3)