Open this photo in gallery: People attend the Auto Shanghai show in Shanghai, China, on April 19, 2021.ALY SONG/Reuters More than 70 Chinese and international automotive brands will showcase more than 100 new or refreshed models at the Shanghai auto show this week, intensifying already cutthroat competition in the world’s premier market for electric vehicles and hybrids. Top-selling Chinese brands such as BYD and Geely are expected to take centre stage at the show from April 23 to May 2, while foreign automakers such as Volkswagen, Nissan, Toyota and General Motors’ Cadillac brand will also jostle for attention. As a…