FB can consider building a first position for the following reasons:
1. Bottom volume: The recent trading volume has increased significantly, indicating that funds have entered the market, indicating that the dealer may be absorbing funds at a low level, supporting the market, and enhancing the support of the market.
2. Breaking through the downward trend line: The price broke through the previous downward trend line, and a reversal signal was formed technically, indicating that the downward trend may end and there is great potential for future growth.
In this case, the first position layout has a high cost-effectiveness and can lay the foundation for subsequent rises.