Milkfish porridge DOES violate the tenets of proper Confucian cuisine, BTW. Confucius had very strict ideas about what counts as proper cuisine and those ideas have continued to shape Shandong (and to some extent Beijing) cuisine to this day.
I find it a bit funny that Confucius was happy about imperial sponsorship of Confucian temples. Emperors didn't exist yet in his time except as mythological ancestors (the 三皇五帝 or Three Sovereigns and Five Emperors) and in fact the imperial system itself runs counter to Confucian ideology initially. It required significant modification of Confucianist philosophy in the Han Dynasty to make it work in the imperial system. After all, the original Chinese empire of the Qin Dynasty was Legalistic in nature.