After landing on the moon, Chang'e-5 probe will collect 2 kilograms of lunar soil and rock samples and bring them back to Earth for further scientific research. This makes China the first nation in the world to collect such samples in over 40 years. CGTN reporter Yang Zhao talked with Professor Lin Yangting, a Chinese lunar geologist who is expected to join the team to study these moon samples brought back by Chang'e-5.