Speaker's Bio: Jiang Meiyue, Professor and Doctoral Supervisor at the School of Mathematical Sciences, Peking University. In July 1989, he obtained his PhD in Science from Peking University. Since 1999, he has been a professor at the School of Mathematical Sciences at Peking University. His main research areas include nonlinear analysis and nonlinear differential equations, including the existence of periodic solutions for Hamiltonian systems, Arnold's conjecture for Lagrange submanifolds intersection problems in symplectic geometry, ROF functional minimization problems, and eigenvalue problems for 1-Laplace operators. Undertook multiple National Natural Science Foundation general and key projects, and published in important academic journals both domestically and internationally Ann.Inst.H.PoincareAnal.、Manuscript Math.、Calc. Var. Partial Differential Equations、JDifferential Equations、Proc. Roy. Soc.Edinburgh Sect. A I have published numerous papers with international influence and have also visited and exchanged ideas as a visiting scholar at multiple foreign universities and research institutes.