Yantai Longhai Home is 4 kilometers away from Xishan Road. According to the map, the distance from Yantai Longhai Home to Xishan Road is 0.2 cm, and the ratio between the map and the actual geographical location is1:200,000, and 0.2 cm * 200,000 is 4 km. So the distance from Yantai Longhai Home to Xishan Road is 4 kilometers.