u/Ju_Targaryen2006

I noticed that the general lore document states that Kaden Tau was the only son of Emperor Aran, but then found many articles and another document on the House of Tau that Aran had four children in total; Maya, Kaden, Ezra, and Julian. Another document states that Andrew was a quiet and cowardly man, easily pushed around by his big brother Emperor Aran, yet elsewhere it states he was an active man with a zest for life and was good friends with his brother. Which of the 2 is correct? Has the lore changed? Why are there these discrepancies?

Why was Japan able to shift from a feudal, technologically backwards society to a modern power able to compete with the globe's major empires in the span of decades, whilst China was unable? From my understanding, China was wealthier, had a larger population (and therefore more manpower), and more resources. Was it really simply the case that Japan was able to arrest its decline before the point of no return, whereas China did not?