The Harm Door symbolises destruction and harm inflicted by one person upon another. It is associated with setbacks and tragedies. It can hinder one’s travel, expansion and career plans. It can also prevent one from beginning a successful marriage, building something new or carrying out a renovation – with all signs pointing it to be the most inauspicious Door.

Natal position: In the East, Zhen Palace belongs to the Wood element, which is at its strongest during the spring season.
Representation: The strong people, thunderous weather and movement. This movement refers to the movement towards something undesirable: that is to say that the Harm Door’s effects are always inauspicious.
Note that when the Harm Door resides alongside one of the 3 Nobles, it can produce some positive effects. Specifically, it can help one catch a thief, collect debts and hunt, fish or gamble successfully.
Strengths
As mentioned, the Harm Door is among the most inauspicious of the 8 Doors. With that said, it can help a person in some very specific situations provided that it resides alongside one of the 3 Nobles. It can aid in hunting, fishing, gambling, collecting debt and in initiating legal action against someone else.
Because the Harm Door can produce such misfortunes, it can also help a person exact revenge upon his or her enemies. One must only make use of the Harm Door for this purpose when absolutely necessary. This is because it can produce unexpected collateral damage and it does not have any moral implications when bringing someone else misfortune.
Weaknesses
The Harm Doors effects are almost always unwelcome. It can hinder one’s attempts to start or maintain his or her business. It is unsuitable for marriage, travel and can derail one’s renovation plans or attempt to move houses