 However, the communists also learned from earlier experience and reached the conclusion of not to engaging the much stronger nationalist naval force in the open ocean where the condition favored the latter.In attempt to search the communists, a detachment of the nationalist fleet ventured too close to shore and three ships suffered damages from communist shore batteries on the Large Head Islet (Datou Zhou, 大头洲) and Triangle (Sanjiao, 三角) Island on May 30, 1950.The nationalists consequently changed their tactics by letting the communists come to them at the waters favored the nationalists, instead of going to the communist's turf to seek out the communists in the coastal regions that favored the communists.