This was the soldiers' first time conducting battle underground. Before commencing, they had already memorized their part of the map. They planned to sneak into the tunnels and attack the demons before they had time to detect their presence.
Inside the tunnel, the first battle occurred at the Green Nightmare Army's area. The intense battle saw the unprepared demons suffer heavy losses. Subsequently, each of the individual teams encountered resistance from the demons.
Ji Fengyan led a team of over 40,000 and encountered their first wave of demons after traveling several kilometers deep.
Those demons had detected the approach of the human army and had amassed their own troops and launched their defense.
Chaos ensued within the vast tunnels. Ji Fengyan and Bai Ze were at the forefront. Their surging energy influenced the rest of the team, and the Wolf Smoke Regiment rallied strongly. They plowed into the demon army and advanced steadily.