Food Regulations - Traditional festival foods such as zongzi and mung bean cake are allowed on trains, but should be sealed [1] - Foods with strong odors like durian and stinky tofu can be carried but are not recommended for consumption on the train [1] - Self-heating meals and hot pots with magnesium-aluminum heating packs are prohibited for both carry-on and checked luggage due to safety concerns [1] Daily Care Products - Liquid capacity limits apply to personal care items; non-aerosol containers like perfume must not exceed 100 milliliters, with a limit of one per type [3] - Aerosol products such as hairspray and sunscreen must not exceed 150 milliliters per container, with a total limit of 600 milliliters [3] - The use of aerosol products is prohibited on high-speed trains to avoid triggering smoke alarms [3] Sports Equipment - Foldable bicycles and balance bikes must be securely packaged and cannot be ridden in stations or on trains [5] - Small drones are allowed but cannot be used along railway lines [5] - Camping tents can be carried as long as they meet size and weight requirements [5] - Fishing rods must not exceed 1.3 meters in length when collapsed on high-speed trains and 2 meters on regular trains [5] Battery and Alcohol Regulations - Power banks with lithium batteries must not exceed 100 watt-hours; a typical 20,000 mAh power bank is permissible [7] - Unpackaged alcohol is not allowed, but sealed bottled alcohol with an alcohol content between 24% and 70% can be carried, with a maximum of 3,000 milliliters [7]

Group 1 - The Yellow River Basin's import and export volume reached 2.05 trillion yuan in the first four months of 2025, marking an 8.8% year-on-year increase [1] - Shandong province, a major foreign trade province in the basin, exported agricultural products worth 53.07 billion yuan, maintaining its position as the top exporter of agricultural products in the country [1] - The manufacturing base in Shandong, including various industrial clusters such as marine engineering equipment and smart home appliances, has significantly contributed to the growth of imports and exports [1] Group 2 - The fishing tackle industry in Weihai, Shandong, is notable for its scale, with nearly 5,000 companies capturing 60% of the global fishing rod market share [4] - Weihai's fishing tackle enterprises exported products worth 1.38 billion yuan in the first four months of 2025, reflecting a 19.6% year-on-year growth [6] - The fishing tackle industry has developed a complete industrial chain, including fishing rods, reels, guides, and baits, enhancing the competitiveness of local companies in international markets [7] Group 3 - The high-end manufacturing sector in Jining, Shandong, has adopted a "cloud command + ground execution" model, which has reduced diesel consumption by 35% and labor costs by 40% in mining operations [10] - The export of engineering machinery and its components from Shandong reached approximately 19.19 billion yuan in the first four months of 2025, with a year-on-year growth of over 18% [10] - The Yellow River Basin's growth rate outpaced the national average by 6.4 percentage points, driven by contributions from provinces like Sichuan and significant growth in Qinghai, Gansu, and Henan [12]