化乐天

Nirmāṇarati, 樂變化天 the fifth of the six desire-heavens, 640, 000 yojanas above Meru; it is next above the Tuṣita, or fourth (sa) deva. loka; a day is equal to 800 human years; life lasts for 8, 000 years; its inhabitants are eight (sa) yojanas in height, and light-emitting; mutual smiling produces impregnation and children are born on the knees by metamorphosis, at birth equal in development to human children of twelve-- hence the 'joy-born heaven'.