Qual é a diferença entre next to e close to ?Você pode indicar exemplo de resposta.

Yes, you could. However, that suggests you may be close to the Chinese border. If you're in Moscow, for example, you would not say you live in Russia next to China.

Also, you probably wouldn't describe Russia as next to China in a general sense either because there is a country (Mongolia) that lies between Russia and China and only a relatively small part of China actually borders Russia directly.

A country like Kazakhstan is closer and the entire width of the country borders Russia so if you were going to describe Russia as next so something, then Kazakhstan would probably make more sense. You could describe Russia as "close to" or "near" China though.