Georgiy Levchenko 

Correspondent member of National Academy Science of Ukraine, Professor
International Center of Future Science/State Key Laboratory of Superhard Materials
Email：levchenko@jlu.edu.cn

Xiaoying Sun

Cheung Kong Scholar, Professor
Email: sunxy@jlu.edu.cn   

Vadimir Tuz

Professor
Email: tvr@jlu.edu.cn    tvr@rian.kharkov.ua