Xuanqing had always been curious as to how Luo Hou could establish the Great Dao Principle of "Dao decays when demons prosper, demons decay when Dao prospers". But if he were a Heavenly Dao Saint, with his Primordial Spirit residing deep within the source of Heavenly Dao, then everything would be explainable!
The appointed number of Saints under heaven is nine. Daoist Ancestor Hong Jun occupies one saintly position, The Three Pure Ones, the two Western Saints, Nuwa Lady, six in total, occupy six heavenly saintly positions. Including Hong Jun's "Hongmeng Purple Qi," there are only eight saintly positions. Only if Luo Hou also became a Saint, could one explain why Daoist Ancestor initially granted only seven opportunities to attain sainthood.
However, perhaps worried that news of Luo Hou becoming a Saint would affect his own unity with the Dao, Daoist Ancestor Hong Jun deliberately concealed the news of Luo Hou's ascension.