The year 2022 marked the 50th anniversary of the establishment of diplomatic ties between China and Malta. Martin Azzopardi, founder of the Science China Corner at St. Margaret College Secondary School in Malta, and his students wrote a letter to President Xi Jinping and received a reply. In his reply, President Xi affirmed the positive role of the scientific "China Corner" in China-Malta friendship and invited them to China for exchanges and study. Why did a teacher in Malta found the Science China Corner? How was their visit in China? Find out in this edition of A Letter in Reply.