$BNB 关注644.8关键位置：

If the four-hour chart remains above 644.8, the rebound strength will increase, and the resistance levels for continued upward movement are at 651, 656, and 662.5.

If the four-hour chart pulls back and falls below 644.8, a minor level correction may begin, with support levels at 639, 632.8, and 628.6.