To go to Shanghai in English, you can say "I'm going to Shanghai" or "I'm headed to Shanghai." These phrases are commonly used in English to indicate that someone is planning to travel to Shanghai. The phrases come from the use of the verb "to go" in English to indicate movement towards a specific destination. For example, you can say "I'm going to the store" to indicate that you are planning to travel to the store. Here are some examples of sentences using the phrases "I'm going to Shanghai" and "I'm headed to Shanghai" with their Chinese translations:

"I'm going to Shanghai next week." (我下周要去上海。)

"Are you going to Shanghai for work or for vacation?" (你去上海是出差还是度假？)

"I'm headed to Shanghai on the first flight tomorrow morning." (我明天早上第一班飞机去上海。)

"I've never been to Shanghai before. I'm excited to go." (我从来没去过上海。我很期待去。)