No, Jing Litian didn't know. He thought the child was scum emperor's child. At first wenfeng emperor (his mtl name is southgate wenfeng, that's why I chose to use wenfeng only) was angry, he thought how could JL had big son outside. Once they knew the story, they both treated QQ like son. Actually wenfeng's personality remind me of WWX from FoD. Back to the recap: - Once QQ return to the capital, there was a feast to welcome him and celebrate his success in Yizhou province. Scum emperor hated QQ with all his might but in front of public, he had to put united front. The fake empress never showed up while Consort Rong was already demoted to concubine (cause of her son) so she wasn't eligible to appear. Instead, it was Rong Xiao who accompanied the emperor. - Concubine Rong tried to kill his half brother, RX, by poisoning his soup. However, emperor and RX sat in the same table and ate the same soup. RX checked the temperature of emperor's soup first, eating it with his own spoon. (RX's spoon into RX's poisonous soup and then to emperor's soup, making it poisonous too) - When the emperor was about to eat it, RX's suddenly spat blood and warned him that the soup was poisonous. The emperor thought that someone tried to kill him. He ordered investigation and concubine Rong was the culprit. She admitted that she only wanted to kill RX. The emperor ordered her to be thrown to cold palace, never to let out and no one could see him. The punishment was super light because no matter what, emperor had to protect Qin Chu. If he killed concubine Rong, then Qin Chu would have no future. - The emperor thought that if he ate the soup first then he would die, luckily RX ate it first. After that, RX could be said to be the ruler of the six palaces. - QQ poisoned the emperor so the emperor fell sick. The poison at first made him energized so scum emperor slept with his concubines everyday, even with two and three concubines in the same time. So when the doctors checked, everyone diagnosed it as over exercise. - Next, QQ, DL and their entourage when to Jiangzhou province to inspect the murder of Jiangzhou's governor. Unlike Yizhou province, Jiangzhou province was the richest province in the empire.