Chapter 1224: Black Dragon

The dim passage was not man-made but naturally formed. It was very spacious and the air was fresh.

Slash…

A sword beam flashed and decapitated two fierce beasts.

Eyes glittering with cold light, Tang Xiu walked to the remains of the beast and slowly said, "It's strange. The space in the passage is so stable that it makes me rather alarmed. Not to mention that these fierce beasts do not exist on Earth. They are like new species with the exception of being weaker in strength. There's also something else noticeable…"

"What else did you find, Grand Master?" asked Tang An curiously.

"If my conjecture is correct, we directly entered another space right as we stepped into this passage. Take a look at the wall closely. You'll find the difference," Tang Xiu said in a deep voice.

The wall?