Here's a hint, CITIES ARE FOR LIVING IN What white tourist think of Kyoto vs what most of Kyoto actually looks like Asian cities are developed to be lived in NOT open air museums for white tourists
What a city looks like is determined by population density and when the city saw major urbanization Paris is "well preserved" is because its urban plan were drawn up by Haussmann in 1853 to 1870 The ancient medieval city fabric was replaced by grand boulevards
So did France destroy their heritage and made a copy of Roman/ Italian city planning? Here are 2 google street views I took of Seoul and Paris So to what standard are you judging a "well preserved Asian city" to be? Because Chinese cities are the best preserved in East Asia
Most of the Street patterns within the 2nd ring road in Beijing are pretty well preserved In fact it is THE best preserved capital city in East Asia
How many countries can you point me to that has most of their cities lives in buildings older than 100 years old? Least of all in East Asia where most building material were timber I can walk In Tokyo from North to South and not encounter a building built before 1950s