Hi, I am planning to visit China in July. I can't choose between Beijing, Tianjin, and Shanghai..

If you come for the first time, you need to visit Beijing and Shanghai. You can finish visiting these two cities in 6 or 8 weeks. When you stay in Beijing, you may spend a day to visit Tianjin too. The transportation is very convenient. You need to bring clothes, sunscreen (if you come in summer), some medicine (if you have some diseases) and special food (if you have some allergies). And I remind you of not taking too much cash with you. You can take 5000 USD or 20000 RMB in cash and deposit the rest of your money in to a card. You can take the card with you too.