Wales faceSouth Africa in two Tests starting with a game at Bloemfontein on 7 June and ending with a second clash at Loftus Versfeld in Pretoria on 14 June.
Ni Lexiong, a military naval expert at the Shanghai University of Political Science and Law, believes China's alleged radar moves were a "face-off" between the two countries and "a warning to Japanese vessels", South China Morning Post reports.