How is the development of plasma lightning protection technology and insulation lightning protection now? Are they recognized in the current lightning protection technology? Why does anyone object to this? Insulation lightning protection is not an absolutely good or bad concept, depending on the specific situation, it may be beneficial or harmful to lightning protection. For example, on the Qinghai-Tibet Plateau, due to its rocky, low water content and high soil resistivity, lightning current can't spread on the ground in time when lightning strikes, resulting in the surface arc lasting hundreds of meters like a fire dragon; The insulation material and structure of Yingxian wooden tower are helpful for lightning protection, but the metal chain at the top of Yingxian wooden tower ionizes under the induction of Lei Yun electric field to generate heteropolar charges, partially neutralizing Lei Yun charges, so that the surrounding electric field will not suffer from lightning disaster. The wooden tower of Yongning Temple in Luoyang was destroyed by lightning because there was only one metal bar at the top and no metal chain. The key is to use different polarity charges (ions) generated by ionization to leak Lei Yun charges, thus effectively preventing lightning strikes. Otherwise, the charge in the lower part of Lei Yun cannot be weakened, and stronger lightning strikes will accumulate, damaging insulators or objects with relatively poor insulation around them.

In a word, slowly releasing Lei Yun's lower charge is the way to prevent lightning strike, which Franklin wanted to do but failed to do.

Incidentally, the metal chain is ionized under the action of Lei Yun electric field to generate plasma.