With Wu Lun, as always, we’re going by his position rather than the name, and by that logic he should be based on Wu Zetian’s fourth son, Prince of Yu, Li Dan. Before Empress Wu’s coronation, he was the Emperor (known as Emperor Ruizong) for six years - albeit in name only, with the real power fully belonging to his mother - before he formally ceded the throne to her.

Li Dan got a second chance at being the Emperor after Wu Zetian was deposed and the next Emperor died - but he still didn’t escape the power of the women of their family, with his sister Princess Taiping, who was partially responsible for bringing him onto the throne, holding significant power in the court and his absolute trust.