Originally Posted by greybeard
You just answered your own question.
No planets in a house, look to ruler of house cusp, its condition and aspects
Often other factors in the chart, seemingly unrelated, will shed light on the affairs of the empty house too
Greybeard, should I copy what you said, look at the chart as a whole. I should look at the interactions of each house/planet not to focus on looking at only one particular house. In Chinese astrology, we also have empty houses but doesn't mean that natives doesn't have any thing or unfortunate in that particular aspect of life.
It only means there is no fix owner in that area of life, instead the function of that palace (house) is greatly influenced by the energy from the other houses, in 3 directions (opposite & trines) and the palaces on the left and right (similar to conjunction, I think!). We also have something similar to the ruler system but in a more individual way for each native...which is hard to explain.
The other thing, I guess "transit" will have significant impact to an empty house in a different way compared to normal houses.
However, because in Chinese astrology for palace doesn't have a fix owner which makes that palace very unstable in both positive and negative way (unknown potential at time) but in general a palace with no stars will always be the weakest or most unstable aspect of that native. However, each 10 years, each year, month, day and hour palaces will move it locations by one: in the chart clockwise or anti-clockwise depending on the individual and the season. Which gives endless possibility to the chart!