On March 26, 2019, Professor Matthias Ballauff from Humboldt University in Germany visited our group and gave a report titled "Interaction of Proteins with Poly-electrolytes: Understanding the Driving Force for Binding."

Before the report, Mr. Jiang gave a welcome speech and welcomed Professor Ballauff and Professor Yan Lu . During the report, the students in our group actively participated in the discussion. After the report, teachers and students had an in-depth discussion with Professor Ballauff.