In September and November 1809, Ching Shih and Cheung Po Tsai fleet suffered a series of defeats at the hands of the Portuguese Navy at the Battle of the Tiger's Mouth, eventually coming to the realization there was no way they would be able to hold out forever. In their final battle at Chek Lap Kok in 1810, they surrendered to the Portuguese Navy on 21 January and later accepted an amnesty offered by the Qing Imperial government to all pirates who agreed to surrender, ending their career and allowed to keep the loot that same year. This amnesty allowed only 60 pirates to be banished, 151 to be exiled, and only 126 to be put to death out of her whole fleet of 17,318 pirates. The remaining pirates only had to surrender their weapons. Cheung Po Tsai changed back to his former name and was repatriated to the Qing Dynasty government. He became a captain in the Qing's Guangdong navy. That is one story. However, the Portuguese version does not match in terms of dates or much else two other sources, the Chinese narrative of Yuan Yonglun, the Jinghai Fenji that was translated and published in English in 1831 or Richard Glasspoole's narrative of his capture, made as an official report to the East India Company, which appears as an appendix to Neumann's translation and various other contemporary and later sources. From these two sources it seems clear that the Portuguese narrative, not published until twenty years later has significant errors.