There is an open space in the east of the house, surrounded by a wall to make a courtyard gate facing north. Is this not good?

In feng shui, this is not good. In feng shui, the northeast is where the five ghosts are located, and the yin is very heavy, so if the gate is opened in the northeast, it is called the "outer ghost gate"! This is very unlucky. No matter how lucky we are, we will go up in smoke! So, if you don't have to, don't open the northeast gate easily! If it is really unfortunate to open here, you can paste exorcism portraits, door gods or auspicious lions on both sides of the gate to exorcise the five ghosts!