These are the biggest* cities in Asia starting with the letter B. Try to guess them. As additional hints, the flag of each city's country and the cities' population figures* are given. I have tried to use the Jetpunk standard for spelling the city names; this mostly means that Indian cities are listed by their more modern (less known) names and Chinese cities according to Pinyin romanization.
*See caveat below.
The population figures are not by urban area, which is usually used on Jetpunk, but by the census results reported on citypopulation.de. This means that cities from different countries are not well comparable, because different countries measure differently. But hopefully the other clues are enough to identify these cities.