A 1,000-meter-long noise-reduction shelter is seen in Shenyang, Northeast China’s Liaoning province on December 5, 2016. The tunnel built with an investment of 60 million yuan ($8 million) utilizes enclosed acoustic barriers, which effectively reduce the noise pollution caused by heavy traffic. (Photo/CFP)
A 1,000-meter-long noise-reduction shelter is seen in Shenyang, Northeast China’s Liaoning province on December 5, 2016. The tunnel built with an investment of 60 million yuan ($8 million) utilizes enclosed acoustic barriers, which effectively reduce the noise pollution caused by heavy traffic. (Photo/CFP)
A 1,000-meter-long noise-reduction shelter is seen in Shenyang, Northeast China’s Liaoning province on December 5, 2016. The tunnel built with an investment of 60 million yuan ($8 million) utilizes enclosed acoustic barriers, which effectively reduce the noise pollution caused by heavy traffic. (Photo/CFP)
