Talking about leap second of UTC at 2020

A resolution about continuing Coordinate Universal Time (UTC) is drafted by Commission A of URSI. When soliciting advices before submitting the resolution to ITU-R, China Commit of URSI delivered an opposition comment. This opposition comment raised highly concern and a further debate upon whether the leap second should be added into UTC. Here, the issue of the UTC's leap second and time continuity is revealed, the views of supportive and oppositive are introduced, the initial and final drafts of statement by URSI are compared.