PL AN ). ▁The ▁gun bo at ▁was ▁named ▁after ▁Min qu an ▁County , ▁which ▁in ▁turn , ▁is ▁named ▁after ▁the ▁Princi ple ▁of ▁Min qu an ▁de vised ▁by ▁Dr . ▁Sun ▁Y at - sen . ▁ ▁Con struct ed ▁by ▁Ji ang nan ▁Sh ip yard ▁at ▁the ▁cost ▁of ▁ 1 . 2 ▁million ▁Chinese ▁dollars , ▁the ▁gun bo at ▁was ▁completed ▁in ▁May ▁ 1 9 3 0 ▁and ▁entered ▁service ▁with ▁RO CN ▁in ▁the ▁same ▁year . ▁The ▁gun bo at ▁was ▁originally ▁armed ▁with ▁a ▁ 4 . 7 ” ▁( 1 2 0   mm ), ▁a ▁ 3 " ▁( 7 6   mm ), ▁a ▁ 2 . 2 5 " ▁( 5 7   mm ) ▁and ▁two ▁O er lik on ▁ 2 0 ▁mm ▁guns . ▁The ▁original ▁ 8 8   mm ▁gun ▁was ▁subsequently ▁replaced ▁by ▁a ▁ 1 0 0   mm ▁gun . ▁▁ ▁Under ▁the ▁command ▁of ▁Commander ▁Li u ▁H uan q ian ▁( <0xE5> <0x88> <0x98> <0xE7> <0x84> <0x95> <0xE4> <0xB9> <0xBE> ), ▁Min qu an ▁was ▁one ▁of ▁the ▁few ▁RO CN ▁naval ▁ships ▁that ▁managed ▁to ▁escape ▁Japanese ▁aer ial ▁and ▁naval ▁attacks ▁during ▁World ▁War ▁II . ▁At ▁the ▁end ▁of ▁the ▁Chinese ▁Civil ▁War , ▁Min qu an ▁and ▁six ▁other ▁gun bo ats ▁of ▁RO CN ▁River ine ▁Def ense ▁Fle et ▁( R DF ) ▁were ▁stuck ▁in ▁Ch ong q ing ▁and