What year did the Manchus accomplish climbing over the Great Wall ?
Sarhuda 's fleet of some 40 ( or 45 ) boats , manned by Manchu soldiers and a Korean contingent led by General Shin Ryu , totaling about 1400 people , descended the Hurka and the Sungari , and on the 10th day of the 6th month of the Chinese calendar ( i.e. , some time in July ) encountered Onufriy Stepanov 's 11 - boat fleet with over 400 Cossacks aboard near the fall of Sungari into the Amur .