@Ringsword
I get what you mean. However that only actually rewrites history. The better version is to return the city to it's orignial roots and emphasize Chinese culture and idenity to the world (Shanghai being an international city does not mean Shanghai has to westernize and adopt western ideas, it means the city is welcoming but the foreigners have to understand that this is China and they have to repsect the culture) also the europeans never actually founded those cities.
Tianjin and Shanghai were already thriving port cities long before the Europeans arived and Qingdao, Dailan and even HK etc where already pre existing ports and their development into metropolises were a completly Chinese intiative. Even HK can fall into my statement as the it remained a corrupt crime ridden aparthied hell hole until the 1970s when the brits knew they would have to hand it over and it really shine as the Pearl after handover. All the Europeans did was turn those cities into corrupt, crime ridden aparthied regimes and that is the only way we should view the colonial legacy of said cities.
However the local governments for some reason rewrites it to make look like it brought their cities to a metropolises identity but this isn't true in the slightest. In the end people in the coastal regions should really stop giving credit to europeans when they never actually develop those colonies and removing them would actually close the chapter for good because it dosen't erase history it makes history.