The second day of the Visiting Professor lecture was held on Friday, May 16, 2025 at 09.00-11.30 WIB in the IDB Computer Laboratory room on the 2nd floor of FMIPA UNY. In this lecture, Prof. Wei-Ying Wu, Ph.D. delivered material on convergence rate and Monte Carlo integration which are useful for dealing with high-dimensional integration problems. In addition to delivering new material, this lecture was also used to discuss the assignments that had been given in the previous lecture. One of the students presented the results of the assignment. After that, postgraduate students from Taiwan actively provided assistance to UNY Statistics students individually to help them understand the concepts and complete the assignments better. To close the lecture, students were again given homework as additional practice to deepen their understanding of the material that had been discussed today.