Kunming Metro Line 2 track fine adjustment (photographed by Wang moment Kong) Shaoxing Metro Line 2 turnout fine adjustment (photographed by Liu Zhaoyu) Zhengzhou Metro Line 12 track fine adjustment (photographed by Wang Zhenqiang) Changchun Metro Line 6 encrypted benchmark setting out (photographed by Zhang Jiarui) Suzhou Metro Line S1 long track data collection (photographed by Peng Zhinan) Shenyang Metro Line 4 turnout point replay (photographed by Yang Ke) Weinan passenger dedicated turnout pre casting (photographed by Huang Zhen)..