**Acknowledgements**

Almost all listed original high-pressure electrical conductivity data have already been obtained by Lidong Dai and his collaborators in the Chinese Academy of Sciences and Yale University. In here, please accept my best honest thanks and greetings to Professor Heping Li in the Key Laboratory of High-temperature and High-pressure Study of the Earth's Interior (HTHPSEI), Institute of Geochemistry, Chinese Academy of Sciences, the People's Republic of China, and Professor Shun-ichiro Karato in the Karato High-pressure Laboratory, Department of Earth and Planetary Sciences, Yale University, United States. This work was financially supported by the National Natural Science Foundation of China (Grant numbers 42072055, 41774099, and 41772042), Youth Innovation Promotion Association of Chinese Academy of Sciences (Grant number 2019390), Special Fund of the West Light Foundation of Chinese Academy of Sciences and as well as Special Fund from Shandong Provincial Key Laboratory of Water and Soil Conservation and Environmental Protection.
