All the lights in this house have three brightness levels:
The first setting, which is the brightest, is where all the lights except the warm-colored one in the center are fully lit.
In the second setting, the outermost light tube will not light up, except for the warm-colored light.
In the third setting, only the warm-colored light in the middle is on.
This type of light does not have a quick-set button; it is controlled by a single light cord.
The three brightness levels mean that you have to turn the light off three times to start from the brightest level.
However, it's not impossible to achieve a completely dark result with just one pull.
The method is also very simple.
Afterwards, while eating dorayaki, Kōyū explained to Ran and the others who were still confused:
"Actually, as long as you loosen the bulb of the warm-colored light in the middle a little beforehand, and then adjust the brightness to the second level, you can turn off the light with just one pull."
To be honest, this brand of dorayaki tastes pretty good.
No wonder Doraemon likes to eat this stuff.
Realizing that his thoughts had gone astray, Kōyū shook his head and turned his gaze back to Uncle Mōri and the others.
“Yes, that’s exactly what I meant,” Uncle Mori nodded in agreement.
After staring at the obviously complicated knot on the light cord for a while, Yamamura Misao asked in confusion:
"Doing this does allow people to be absent and also allows you to turn off the lights."
"But can this knot be untied?"
"Huh? Why do you want to untie it?" Uncle Mori asked, puzzled.
“Mr. Mori, look,” said Yamamura Misao, pointing to the light cord.
"If we're going to tie Mr. Yanfu's hands, we shouldn't do it while the light is on."
"So I think the murderer must have untied the knot once, and then tied it back up again."
"Hmm, that makes sense." Uncle Mori nodded in agreement.
"But this knot looks complicated to tie." Yamamura Misao leaned closer to the light cord and carefully examined the knot.
After he finished speaking, the others also turned their attention to the specially extended light cord.
…
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