Thank you for inviting me. 30 years old is an important turning point in life. Every choice you make will change your future life! First of all, we should make a master plan according to our actual conditions; For starting a business, your intention, the amount of investment, and even the worst consequences you can bear after failure, if everything is OK, then start a business. You can buy a house whenever you have money. If you are a well-behaved office worker, you can consider buying a house, living and working in peace and contentment, and being plain is a blessing! I hope I can help you.