What to Prepare Before Traveling to Vietnam?
I, Passport: Apply at the Public Security Bureau in your place of residence, and it's best to apply at least half a month in advance.
II, Visa: Apply at the Vietnamese embassy or consulate, but most people use travel agencies or online Taobao for (da ban – to handle on behalf of).

III, Maps: Such as Google Maps etc.
IV, Translation Software: Such as using Google Translate etc.

V, SIM Card: Buy at the border or get one in China, you can handle it on Taobao. Purchase a Vietnamese SM card, Vinaphone and Mobifone are common, the charging standards are similar.
V, Money: Bring a bank card with UnionPay logo, you can withdraw abroad, and bring some cash RMB, carrying a small amount of US dollars is better. Some small shops can use WeChat and Alipay.

VI, Vietnam often has strange, sudden rainstorms, bring an umbrella for sunny days and a rain cover for rainy days. Vietnam's health is generally okay, plus it's easy to have digestive problems, bring some long-lasting medicine.