Is it better to work abroad in Singapore or the United Arab Emirates?

Go to Singapore. There are many Chinese there. Sooner or later, you may have the opportunity, and you may also have the opportunity to immigrate. The UAE is too hot, and the UAE is dominated by Indians and Pakistanis. Many Muslims are not accustomed to it, and they have gone there. If you are just a part-time worker, you will not be naturalized even if you work for 100 years, but it will be a big problem no matter where you live and have food and accommodation.