Aerial photo taken on June 29, 2020 shows a view of the bridge linking Nantong and Zhangjiagang in east China's Jiangsu Province. The bridge is a road-rail cable-stayed bridge and will open to traffic on July 1. (Xinhua/Ji Chunpeng)

Aerial photo taken on June 30, 2020 shows a view of the bridge linking Nantong and Zhangjiagang in east China's Jiangsu Province. The bridge is a road-rail cable-stayed bridge and will open to traffic on July 1. (Xinhua/Ji Chunpeng)

Aerial photo taken on June 30, 2020 shows a view of the bridge linking Nantong and Zhangjiagang in east China's Jiangsu Province. The bridge is a road-rail cable-stayed bridge and will open to traffic on July 1. (Xinhua/Li Bo)

Aerial photo taken on June 29, 2020 shows a view of the bridge linking Nantong and Zhangjiagang in east China's Jiangsu Province. The bridge is a road-rail cable-stayed bridge and will open to traffic on July 1. (Xinhua/Li Bo)

Aerial photo taken on June 29, 2020 shows a view of the bridge linking Nantong and Zhangjiagang in east China's Jiangsu Province. The bridge is a road-rail cable-stayed bridge and will open to traffic on July 1. (Xinhua/Li Bo)

Aerial photo taken on June 30, 2020 shows a view of the bridge linking Nantong and Zhangjiagang in east China's Jiangsu Province. The bridge is a road-rail cable-stayed bridge and will open to traffic on July 1. (Xinhua/Ji Chunpeng)

Aerial photo taken on June 30, 2020 shows a view of the bridge linking Nantong and Zhangjiagang in east China's Jiangsu Province. The bridge is a road-rail cable-stayed bridge and will open to traffic on July 1. (Xinhua/Li Bo)

Aerial photo taken on June 30, 2020 shows a view of the bridge linking Nantong and Zhangjiagang in east China's Jiangsu Province. The bridge is a road-rail cable-stayed bridge and will open to traffic on July 1. (Xinhua/Li Bo)

Aerial photo taken on June 29, 2020 shows a view of the bridge linking Nantong and Zhangjiagang in east China's Jiangsu Province. The bridge is a road-rail cable-stayed bridge and will open to traffic on July 1. (Xinhua/Li Bo)

Aerial photo taken on June 30, 2020 shows a view of the bridge linking Nantong and Zhangjiagang in east China's Jiangsu Province. The bridge is a road-rail cable-stayed bridge and will open to traffic on July 1. (Xinhua/Li Bo)

Aerial photo taken on June 30, 2020 shows a view of the bridge linking Nantong and Zhangjiagang in east China's Jiangsu Province. The bridge is a road-rail cable-stayed bridge and will open to traffic on July 1. (Xinhua/Ji Chunpeng)