On 7th February, 2021, the No. 7674 segment of the Musaimeer Drainage Tunnel Project in Doha, Qatar, is assembled, in which the “CREC 681” EPB TBM produced by China Railway Engineering Equipment Group Co., Ltd. affiliated to CRHIC completes a blind heading of more than 10,000 meters, setting a new blind heading record in the global TBM field.