"Morse code should be typed using telegraph machines." Hearing Pierce say this, Leonard Ethan immediately fell into deep thought. "That is to say, the other party may want to remind us that these characters are generated by tapping."
"And by tapping, characters can be displayed on mobile phones." Following a train of thought, Leonard instinctively thought of mobile phones, but soon realized that it must not have been that.
"No, that era didn't even have mobile phones, let alone common telephones." He shook his head, then suddenly looked up at his two companions and said, "I've got it, that's probably it."
"As I said before, showing this phrase in Morse code is to get us to focus on typing, and the most common thing that could type characters in that era was a typewriter."
"Typewriter!" Pierce and Fairmont both showed puzzled expressions, then Pierce asked, "But, what's the difference between typing with a typewriter and handwriting in this place?"
