6 الموسم
137 حلقة
15 Minutes - Season 4 Episode 12 الحلقة 12
Since ninja were engaged in espionage, they had to gather information and accurately convey it without anyone knowing. Typical means of information transmission included smoke signals, a cipher using knots in a rope, and special methods of transporting secret messages. But in the second half of the episode, we'll look at their ultimate method of concealing information: invisible ink! Find out how they did this, and follow Chris as he makes his own secret message with ninja techniques.
- عام: 2023
- بلد: Japan
- النوع: Documentary
- ستوديو: NHK WORLD-JAPAN
- الكلمة الرئيسية:
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