Investors are classified into the following 5 types according to the ratio of capital losses they can afford:

1. Conservative investors: Steaker shall sustain investment risks, with no capital losses occurring to investors.

2. Robust Investors: Investors can afford to sustain a maximum amount of loss below 15% of the principal invested (excluding 15%).

3. Lv1 Adventurous Investors: Investors can afford to sustain a maximum amount of loss between 15% and 25% of the principal invested (excluding 25%).

4. Lv2 Adventurous Investors: Investors can afford to sustain a maximum amount of loss between 25% and 49% of the principal invested (excluding 49%).

5. Lv3 Adventurous Investors: Investors can afford to sustain a maximum amount of loss above 49% of the principal invested.