大小倍投公式

简介：It feels like the water level of Tonghui River has risen a lot. In the past, the shallowest point was less than one person high, making it difficult to sail. Now it is one person high. This is of course due to the closure of the Tianjin gate. The only regret is that after the gate is closed, the river water hardly flows, and it is not as fast as a big river, which is not conducive to defense.