Like you really understand how to read situations and conditions. Yes. Business people must be observant in everything. If a Chinese person wants to open a shop, he surveys the market and chooses/looks at a strategic place and also counts the number of people passing by and also calculates the potential who will stop by if he builds his shop in a matter of hours, for example.
If the capital is small, the reference above is good too, but it's better to just sell liquids or just daily necessities and the money will turn over quickly.
This idea is good one not only Chinese but all citizens who wants to settle a business should survery the location where he desires to put the foundation of business because if one settle a business where there is no population will not be profitable as profit always depends on number of buyers.
One should use sweet words as it is famous that those who speak sweetly can sell even less demanded materials. Small businesses idea is suitable because if you have no experience then start from small one as there is no need of larger capital to use and also If unfortunately your business did not get successful then your loss will also be less. Always first try to know everything about business because knowledge and experience makes an easy profit.