Do I have to change the plug to go to Bali?

You need to change the plug to go to Bali.

Although the voltage in Bali is 220V as in China, the plug in China is flat, and the round head is used in Bali. The two are incompatible, so it is recommended to bring your own converter. Some hotels can borrow converters at the front desk.

Extended data:

GB plugs are used in China, Australia, New Zealand and Argentina, and are characterized by three flat heads.

American standard plugs are used in the United States, Canada, Japan, Brazil, the Philippines, Thailand and other countries and Taiwan Province Province, China, with the characteristic of one ring and two flats.

British standard plugs are used in Hong Kong, Britain, India, Pakistan, Singapore, Malaysia, Vietnam, Indonesia, Maldives, Qatar and other countries and regions, and are characterized by three square heads.

European standard (German standard) plugs are used in EU countries such as Germany, France, Netherlands, Denmark, Finland, Norway, Poland, Portugal, Austria, Belgium, Hungary, Spain, Sweden, South Korea, Russia and other countries, and are characterized by two round heads.

South African standard plugs are mainly used in South Africa, India and Russia, and are characterized by three round heads. There are Italian standard (Italian standard) plugs and Swiss standard (Swiss standard) plugs.

There are also cases where multiple standards are used in the same country or region.