Dad has been in the mining trade for a long time. Sometimes, a tungsten ore worth 5 million has a cycle of about 10 days. After deducting expenses, making 50,000 is quite satisfying.

A friend in the group provided information about gold. I calculated that 20 million would only yield a profit of about 100,000. I called Dad, and he said it can be done domestically because refining only takes a day, and flipping it for a 0.5% profit is also possible.

In trade, the pursuit is stable profit with a short cycle. Many times, even a 1-point profit is worth doing. This is roughly what the capital turnover rate in accounting means.