Police officers line up at the entrance to the expressway to bid farewell to the medical assistance team from Shaanxi Province in Shijiazhuang, north China's Hebei Province, Jan. 27, 2021. (Xinhua/Zhu Xudong)

Ambulances of the medical assistance team from Shaanxi Province are ready for departure at the entrance to the expressway in Shijiazhuang, north China's Hebei Province, Jan. 27, 2021. (Xinhua/Zhu Xudong)

People bid farewell to the medical assistance team from Shaanxi Province at the entrance to the expressway in Shijiazhuang, north China's Hebei Province, Jan. 27, 2021. (Xinhua/Zhu Xudong)

Police officers line up at the entrance to the expressway to bid farewell to the medical assistance team from Shaanxi Province in Shijiazhuang, north China's Hebei Province, Jan. 27, 2021. (Xinhua/Zhu Xudong)

Ambulances of the medical assistance team from Shaanxi Province leaves Shijiazhuang, north China's Hebei Province, Jan. 27, 2021. (Xinhua/Zhu Xudong)