On Dec. 2, the 7th (2021) ITA Tunnelling Awards revealed that the project of Dalian Metro Line 5 (Large-diameter Shield Tunnel Engineering Project in Karst Strata of Sea Area) constructed by a slurry TBM named “Haihong” manufactured by CREG (China Railway Engineering Equipment Group Co. Ltd.) won the ITA Tunnelling Awards 2021 in the category of “Project of the Year.” This is another world-class innovation project participated by CREG after the project “The Mechanized Method with Large Section Horseshoe Shape EPB TBM First Applied in Loess Mountain Tunnel” won the ITA Tunnelling Awards 2018 in the category of “Technical Project Innovation of the Year.”