Arriving at the tunnel entrance, Felix glanced at Paul. "Alright. Since Holden knows the way, you don't need to come. If things get dangerous, having an extra person to protect only increases the risk."

Paul understood. He had poured enormous manpower and resources into this search, yet they still had not found anything. That alone proved that ordinary means would not work, and there was always the possibility of real danger lurking below.

"Mr. Zeller, please… protect Holden. He's my only child."

Felix gave a small nod, and Paul pulled Holden into a tight embrace as if he were sending him off to war. Holden assured Paul, "Don't worry, Dad. Mr. Zeller's with me."

The underground tunnels had electric lighting, a clear sign of just how much effort had gone into this excavation. Paul had even hired guards to keep watch, ensuring no outsiders wandered in. Though the area was remote, with only vineyard workers nearby, he had not taken any chances.

Felix walked forward, keeping his eyes