Mr. Andrew, the period from 1450 to 1700 spans two dynasties. First, it's the Ming. Ming Dynasty was established in 1368. In 1450, the Emperor Ming Daizong was crowned. Ming ended up in 1644 and hereafter is the Qing. The year of 1700 is just during the reign of Emperor Kangxi. So, your question is actually the two same questions of two different dynasties.