Complex sentence: From Longyan, in southwestern Fujian province, the Longxia Railway runs to the southeast, crossing the Boping Mountains, and following the Western Stream to Zhangzhou, where it joins the Xiamen-Shenzhen Railway to Xiamen, on the Fujian coast.
Split into simpler sentences: From Longyan, in southwestern Fujian province, the Longxia Railway runs to the southeast, crossing the Boping Mountains, and following the Western Stream to Zhangzhou, where it joins the Xiamen-Shenzhen Railway. Then it shares tracks with the Xiamen-Shenzhen Railway to Xiamen, on the Fujian coast.