The No.1 tunnel, Slope 1, Bid Lot 6, being linked up marked the fact that the 7 tunnels of Nanning-Guangzhou High Speed Railway, which were constructed by China Railway No. 2 Civil Engineering Group Co., Ltd., have all been joined up. In other words, half of the construction quantities of the mentioned bid lot have been completed in only one third of required time.

Photography by Liweiming