Group 1 - Japanese automakers Toyota, Honda, and Nissan are collaborating with Chinese companies to develop smarter electric vehicles due to the rapid evolution of technology standards in China's electric vehicle market [1][2] - Toyota has designed its first electric sedan, the Platinum 7, specifically for the Chinese market, which features Huawei's HarmonyOS for its smart cockpit system [1] - Nissan and Honda are partnering with Chinese smart driving company Momenta to equip their new electric models, N7 and Ye, with advanced driver assistance systems tailored for the Chinese market [1] Group 2 - The three Japanese automakers began collaborating with Chinese companies in the 2000s, achieving record sales of 4.88 million units in China by 2020, but they are now lagging in the electric vehicle sector [2] - The total sales of these Japanese automakers in China have declined by approximately 30% from their peak as the demand for new energy vehicles grows [2] - The expertise gained in China is expected to help Japanese automakers compete better in other markets, as stated by Toyota's China General Manager [2]