Go to Chongqing. Beijing. How much does the trip cost?

You don't say where you are from, but if you take the train, you can sit from Shenzhen to Beijing and then from Beijing to Chongqing. Railway ticket sleeper 1200, hard seat 500. Other scattered bus/taxi fees, prepare 200.

*** 1400

Accommodation: Beijing, single room 150/ night. If you want to find a cheap one, that's fine. I found a 60-year-old and shared it with four people.

Chongqing: Just 80/ night.

150 *15+80 *15 = 3450 yuan.

I'd rather rent executive suite if I can live in the same place every day. Beijing has never rented it, so I think it is around 1000. Chongqing is about 500 in half a month. Save at least half as much as staying in a hotel every night)

Diet: Look at your consumption level. Save 1000.

Go out for a stroll, snacks, souvenirs, etc. Look at your spending power.

In summary, the minimum 3000 yuan can be on the road.

Judging from the article, your family assets should not be a problem. It is recommended to prepare more than 10000. It is better to be prepared than to spend enough. Anyway, the money on the card is not a weight.