Group 1 - The summer travel peak has officially begun, with Tuniu's booking data indicating that the first wave of travel started on June 28 and is expected to last until mid-August [1] - Domestic long-distance travel and outbound short-distance travel are particularly popular, with family travelers making up 42% of total travelers [1][2] - Popular domestic travel destinations include Shanghai, Beijing, Sanya, Guangzhou, Nanjing, Urumqi, Chengdu, Hangzhou, Zhuhai, and Guilin [1] Group 2 - In outbound travel, popular destinations include the Maldives, Japan, Indonesia, Italy, Switzerland, France, Malaysia, Singapore, the UK, and Germany [1] - Among popular domestic group tours, routes to Northwest, Southwest, North China, and East China are seeing high booking volumes, with specific tours like "Qinghai Lake - Chaka - Dunhuang 8-day tour" and "Nanjing 3-day tour" ranking highly [1] - In outbound group tours, longer itineraries such as "Japan Toyama - Osaka - Tokyo 8-day tour" and "France - Italy - Switzerland 13-day tour" are favored by Tuniu users [1] Group 3 - The popularity of high-speed rail travel is on the rise, with "2-3 hour high-speed rail circles" becoming a favored choice for domestic travelers [2] - Key destinations for high-speed rail travel include Beijing, Shanghai, Nanjing, Suzhou, Hefei, Hangzhou, Qingdao, Guangzhou, Tianjin, and Shijiazhuang [2] - Family travel remains a significant trend, with theme parks like Zhuhai Chimelong Ocean Kingdom and Shanghai Disneyland seeing high booking rates [2]