Why has a Serbian folk song, Tamo daleko, which debuted at Chinese Spring Festival Gala in 2023, received a Guinness World Record for most-watched TV program in the world? How has the China-Serbia cooperation made the century old Smederevo Steel Plant "the pride of Serbia" again? Chen Bo, president of China Institute of International Studies, also former Chinese ambassador to Serbia told CGTN Digital reporter Shen Shiwei that equal treatment, mutual respect and win-win cooperation are the key words to illustrate the ironclad friendship between China and Serbia.