What does it mean to sail against the current?

The water flow in front of and behind the house should be smooth to prevent heavy rain and accumulated water from soaking the house down, while the crops have a little water storage capacity and are more drought-tolerant. Facing the water to the field means that the water flow before and after the house should be smooth to prevent heavy rain and accumulated water from soaking the house, while the cultivated land is slightly more drought-resistant than water. Along the direction of the current is the house, and against the direction of the current is the temple.