“The Yuanqi lun is an important source for Taoist views of cosmogony and cosmology…. Citations from the Sancen ge (Song of the Three Summits), a work attributed to Luo Gongyuan (fl. 712-13), show that it dates from the latter part of the Tang Dynasty (618-907).”—Sakade Yoshinobu
“At first, pneuma is not yet differentiated and exists in the shape of an egg; this is called Great Oneness (tàiyī). Then it begins to separate: the clearer pneuma rises to become Heaven and the grosser pneuma descends to become the Earth. The “central harmony” (zhōnghé 中和) between them is humankind.”—Sakade Yoshinobu
“The first human being is Páng Gŭ 盤古. At his death, the various parts of his body become the Sun, the Moon, and the stars in heaven, and the mountains, the rivers, and the plants on earth.”—Sakade Yoshinobu
In this encyclopedic entry Sakade Yoshinobu describes the ancient text in details; I got only three quotes here, and the last one tells us Páng Gŭ 盤古 story. Cant help myself to call to mind the Indian sacral story of Tantric origin with a female heroine this time.
“According to popular legend, tantric sacred places (pīṭhasthānas), came into existence when Śiva carried away the dead body of his consort Satī, or Pārvatī, which have been dismembered by Vishṇu into fifty-one parts that fell on different places all over the country. These became tantric pilgrim centers.”—Ajit Mookerjee, Madhu Khanna in The Tantric Way: Art Science Ritual, 2003
Was it question of taste only in creating legends process of old times?