Spectacular sight in east #China!⁣ ⁣ Tens of thousands gathered in #Zhejiang to witness the #QiantangRiver #tidalbore as it’s in the best viewing season.⁣ ⁣ A tidal bore is a phenomenon where the leading edge of an incoming tide creates a wave that surges up a river against the flow. It is caused by the tide-generating force, which is the result from the combined gravitational attraction between the Earth, the moon and the sun.⁣