21 IS THE BASE NUMBER OF LITTLE HOUSES TO BE OFFERED TO THE DECEASED IN GENERAL
Caller: Master, if we don’t dream of the deceased, can we still offer Little House to them on occasions such as the Tomb-Sweeping day, Zhong Yuan Festival, Winter Solstice or their death anniversary?
Master Jun Hong Lu: Yes, you may do so.
Caller: How many Little Houses should we offer roughly?
Master Jun Hong Lu: Generally, it is alright to offer.
Caller: What is the maximum number of Little Houses that can be offered?
Master Jun Hong Lu: Offer a batch of 21 Little Houses. You may use this number as a basic guideline.
Source: Wenda20181209A 03:10, Master Jun Hong Lu’s call-in radio program