What does it mean that the house sign flies into the seventh house?

The seventh house of the astrolabe is dominated by cancer. Which house will it fly into?

The seventh house of the astrolabe is dominated by cancer and flies into the ninth house.

The seventh house is called the marriage house. It is a house related to marriage, spouse, intimate partnership, cooperation and contract.

7 The palace master flies into the ninth house: it is more likely to be a long-distance relationship or a transnational marriage, or to have a common religious belief with the other half, or at least to be separated from each other at some time in the marriage.