In chinese feng shui science, the terminology "ride-on qi" and "take-in qi" are two different technique to obtain the relevant qi for application. yin mansion (tomb, grave) is on the "ride-on qi" technique , whereas the yang mansion (residental house, apartment) is on the "take-in qi" technique.
 
In a classical feng shui literautre written in ancient china song dynasty, titled "geographical snow core poet" , it said, "take-in qi" refers to the qi coming from outside externally, then being taken-in so why yang mansion feng shui emphasizes on doors and road pathways to direct the qi into the mansion for the residents taking in it.
 
In another feng shui literature written in ching dynasty, titled "mansion feng shui note and guide", it said " ride-on qi" and "take-in qi" are not the same, the first one refers to riding on the earth (ground) qi, whereas the second one refers to taking in the heaven (sky) qi. Yang mansion is taking the heaven qi travelling through doors and road pathways.
 
 
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乘氣與納氣截然不同，陰宅為乘氣，陽宅為納氣．《地理雪心賦》 “ 納氣指氣由外來，　在內納之，　故宅重門路，人居其中，納之也．” 《宅譜指要》的作者 (清)魏青江, 云：納氣與乘氣不相同，乘氣是乘地氣，納氣是納理氣，不以宅之座向為主，「專取」門路之來氣。