Voted for Wuhan, even though it has colder winters than the other 2 cities, because it has such a long and hot summer season. Melbourne has the warmest winters of the 3 climates, but it's also the furthest away from the Equator and has the lowest average annual temperature.
I once made a fictional version of Wuhan's climate set in a world 6-7 C warmer than today that averages 18 C/8 C in January and 42 C/31 C in July and August. [
The current January and July averages are 8 C/1C and 33 C/26 C.]