Death.

Shi Lang had frozen in his spot. At the same time, the drone displayed an empty spot. Hayley said, "General, we do not see anything on the monitor." 

The young man replied, "It is inside my brain. The final test is the test to face your worst fear. I am going to close the broadcast, I do not want any interference or disturbance." 

That said, he switched off both, the communicator and the drone cams. He was not in the mood to humor any of the people in the monitoring room. The reason was the images inside his mind. The formation he stepped inside seemed to be a mental attack. When he moved forward, he saw the biggest adversary from his past life.