On the afternoon of April 8, 2021, as invited by the IPC, the Lab Manager, Mr. Gestar gave a live lesson on the top three test methods with the highest number of votes in the poll of the IPC-TM-650 Standard (Chinese version). The poll was made around the 2021 Chinese Spring Festival by the IPC. In the open course, Mr. Gestar made detailed explanation of these methods and had an in-depth discussion with the viewers. The lesson was well received and highly commented by the industry.