On April 21, 2019, "full speed half horse" starts the 2019 Shanghai international half marathon on the most beautiful riverside track. With the joint efforts of SMG five star sports and SMT, the breakthrough in the production of 5G+4K live broadcasting full-link signals for the Shanghai international semi horse was successfully achieved. This also indicates that the research on SMT in 5G+4K TV live broadcasting technology has been able to be applied in practice, and the technical reserve for further development has been made.