Editing AD 33 (section)

====China====
* Although the usurpation of [[Wang Mang]] and the [[Chimei|Chimei Rebellion]] are behind him, [[Emperor Guangwu of Han|Emperor Guangwu]] now faces a new threat to the [[Han dynasty]]: the [[Naval history of China#Early literature|Rebellion of Gongsun Shu]] in the [[Sichuan]] province. Gongsun's naval forces are unsuccessful against Han General Cen Peng, so Gongsun decides to fortify his position by [[Blockade|blockading]] the entire [[Yangtze River]] with a large floating [[pontoon bridge]], complete with floating fortified posts. After Cen Peng is unable to break through, he constructs several "[[Naval history of China#Tower ships|castle ships]]" with high [[defensive wall|rampart]]s and [[ramming]] vessels known as "colliding swoopers", which break through Gongsun's lines and allow Cen to quell his rebellion. Gongsun Shu is totally defeated [[AD 36|three years later]].