"What traces? How can these be traces of tachyon motion?!"

Lu Yongchang took a deep breath, suppressing his inner excitement, and began to explain carefully.

"Before I explain, I need to clarify two concepts."

"First of all, tachyons travel faster than the speed of light."

"Secondly, during the motion of a tachyon, it continuously releases energy outward, and at the same time, its speed will increase."

"Is that understandable?"

After receiving an affirmative answer, Lü Yongchang organized his thoughts and said again, "Based on the current experimental data, tachyons release energy by emitting gamma rays."

"And gamma rays travel at the speed of light."

"This has created a phenomenon."

"Its gamma rays are too fast to catch up with!"

Lu Yongchang rubbed his hands excitedly, and spoke faster: "Imagine a tachyon, emitting gamma rays as it passes right in front of you."

"It's so fast that you can't observe it at first."

"You can only observe it when the gamma rays it emits pass by you."

"This leads to an interesting observation phenomenon."

"Two gamma rays traveling in opposite directions!"

"One gamma ray is chasing the direction the tachyon is moving in, and the other is passing by the gamma ray you released earlier. The two are moving in opposite directions!"

"At the same time, due to the Doppler effect, these two gamma rays will exhibit significant redshift and blueshift!"

P.S.: Thanks to the amazing verification from the legendary Lu Yinyang from Eternal Immortal Village!