There are obviously not as many foreigners in Guangzhou as in Shenzhen, and Guangzhou is a city that pays more attention to life. The development of the Internet industry did not start as early as Shenzhen. There is also a lack of larger companies. Even if companies such as YY Vipshop went public in recent years, it did not attract too many people from other places. So there are more talents in Shenzhen.
However, the advantage of Guangzhou is that there are many colleges and universities, so the advantage of backwardness is still possible. But if you want to find a master's degree, you have to see if you can afford it. The temptation is big enough, people can be found all over the country, not necessarily forcing Guangzhou.
If you just want to meet the construction period or start a startup company, I'll tell you with my more than ten years' recruitment experience, then honestly find some junior talents. Don't think too much.