Liu Sui and his team managed to drill a straight, nearly 1,200-mile-long tunnel 1,500 meters below the ground in less than ten hours.
For them, it was just child's play.
Liang Yuan, Zhang Min, and several other Spirit Swallows took the lead, using Feng Xing to navigate and align the tunnel.
Liu Sui carved the tunnel with his Sword Array himself.
Behind them, Zhou Wu and others from Moving Mountain alternated in releasing the Mini Moving Mountain seal to consolidate the tunnel.
Even the presence of groundwater and underground rivers were redirected and sealed off by Beiming using the Mini Bei Ming Seal.
All in all, with this kind of operation, the tunnel project was completed both quickly and excellently.
To top it all off, it met the standards for aircraft operations.
The tunnel was 50 meters high, 150 meters wide, smooth, sturdy, and utterly straight.
Regrettably, we could not connect to dozens of bases along the way.