刘安
In the same year, Emperor Wu's newly favoured concubine Wei Zifu became pregnant with his first child, effectively clearing his name and silencing any political enemies who had schemed to use his alleged infertility as an excuse to have him removed. When this news reached the state of Huainan, Liu An, who was hoping the young Emperor Wu's infertility would allow him to ascend to the throne, went into a state of denial and rewarded anyone who told him that Emperor Wu was still childless.