Li Tingyan extended his five well-defined fingers, pressing them against his hair, tapping with varying lengths and weights, a total of five times.
Yunrou was puzzled,
"What kind of secret sign is this—just scratching your head?"
Nianyang chuckled, "Of course it's not scratching your head; it's Morse code."
Morse code is a signal code that alternates between continuous and interrupted signals, using different sequences to represent English letters, numbers, and punctuation marks.
The method of operation involves using the length and weight of taps to express different codes, eventually combining each tap to form English words.
It's crucial to note the pauses between dots and dashes, short pauses between each character, medium pauses between words, and long pauses between sentences—it's indeed brain-twisting.
Li Tingyan grasped it instantly, quickly deducing, "It's BECGH!"
