Vietnam's top leader, To Lam, is in China for a three-day state visit, his first trip abroad since becoming General Secretary of the Communist Party of Vietnam Central Committee earlier this month. Starting in Guangzhou, he visited landmarks linked to late Vietnamese leader Ho Chi Minh and emphasized that China remains Vietnam's "top priority" in its foreign policy. The visit, at the invitation of Chinese President Xi Jinping, highlights the importance both nations place on the relationship. What outcomes can be expected from this visit, and how will China and Vietnam accelerate their "train of traditional friendship"?