There is a Haiya department store around Hua Kai Square, and there is a village behind Haiya department store. You can rent a house there and walk to Hua Kai for about 10 to 15 minutes. A better house (single room) is also about 400. If you want to rent a room and a living room, you may want to rent around 500 yuan.

There is a village in Haogang near Hua Kai Square, and the general rent is around 250-500 yuan. It used to be rented by 300 yuan for one month, with a single room with a bathroom. Cooking can be done on the balcony, but the bathroom and balcony are narrow. My classmate rented another room, 400 yuan, which is also a single room, but it is bigger. He said that he lived comfortably. But it's a bit far to walk to Hua Kai, about 20 to 30 minutes.

Although the public security in Dongguan is not so good, renting a house in Dongguan is relatively safe, provided that safety measures are taken.

I hope my answer is helpful to you.