2. If the snake enters the house after passing by, but not permanently, it is not a bad thing, but represents a kind of luck. From the perspective of geomantic omen, there are many reasons why snakes enter the house. First, the entry of Qinglong into the house can bring wealth. Second, having ancestors is to hope the life of future generations, which is also good for their families. Third, it is possible that the snake foresaw the danger and came to report it. None of this is malicious.