Air ticket: 8000- 10000 yuan, depending on your reservation time.
Deposit: there must be at least 50,000 yuan for real estate, and at least 1.5 million for no real estate.
Hotel: In Belgium, the standard is 1500 yuan per day (average 150 Euro).
Catering: The minimum daily standard is 50 euros (about RMB in 500 yuan).
Transportation: Look at your route and prepare to average at least 30 euros a day.
Based on 7 days in Belgium, and you are in Beijing, starting from Beijing, you need at least 40 thousand RMB a week.