With the help of a map, can you name the most populous cities of the Chinese Empire under the Qing dynasty with an estimated population of over 20,000 in 1800 AD?
I believe all of these places still exist today only that not being the center of its region. Others were struck hard through times such as Zhapu being destroyed in the Opiam War.
Wuchang - Later merged with Hankou and Hanyang to form Wuhan in 1927.
Songjiang - Annexed to Shanghai in 1958.