 Kings enjoyed planting pines and junipers; mandarins loved growing "Thuja orientalis" and Casuarina; intellectuals or other notable figures liked "Ficus"; and lay people devoted themselves to planting mallow ("Malva"), "Tamarindus indica", and "Melaleuca leucadendra".Except for those planted by kings, all trees planted for pleasure by mandarins or lay people had to have their tops bent downward because it was considered impertinent to superiors to have treetops growing upward.A "Hòn Non Bộ" was constructed by the Nguyen emperors in the pond of Diên Thọ Palace in the Imperial City of Huế.