Staff show saucer magnolia via live broadcast at the Zhuge ancient town in Mianxian County of Hanzhong, northwest China's Shaanxi Province, March 3, 2020. The saucer magnolia at the Zhuge ancient town, which has been closed due to the novel coronavirus disease outbreak, is in full blossom. (Xinhua/Tao Ming)

Aerial photo taken on March 3, 2020 shows the saucer magnolia at the Zhuge ancient town in Mianxian County of Hanzhong, northwest China's Shaanxi Province. The saucer magnolia at the Zhuge ancient town, which has been closed due to the novel coronavirus disease outbreak, is in full blossom. (Xinhua/Tao Ming)

Photo taken on March 3, 2020 shows the saucer magnolia at the Zhuge ancient town in Mianxian County of Hanzhong, northwest China's Shaanxi Province. The saucer magnolia at the Zhuge ancient town, which has been closed due to the novel coronavirus disease outbreak, is in full blossom. (Xinhua/Tao Ming)

Photo taken on March 3, 2020 shows the saucer magnolia at the Zhuge ancient town in Mianxian County of Hanzhong, northwest China's Shaanxi Province. The saucer magnolia at the Zhuge ancient town, which has been closed due to the novel coronavirus disease outbreak, is in full blossom. (Xinhua/Tao Ming)

Photo taken on March 3, 2020 shows the saucer magnolia at the Zhuge ancient town in Mianxian County of Hanzhong, northwest China's Shaanxi Province. The saucer magnolia at the Zhuge ancient town, which has been closed due to the novel coronavirus disease outbreak, is in full blossom. (Xinhua/Tao Ming)

Photo taken on March 3, 2020 shows the saucer magnolia at the Zhuge ancient town in Mianxian County of Hanzhong, northwest China's Shaanxi Province. The saucer magnolia at the Zhuge ancient town, which has been closed due to the novel coronavirus disease outbreak, is in full blossom. (Xinhua/Tao Ming)