2. Passengers with smart phones should take the initiative to show the health code to the driver after scanning the Shandong location code. If the nucleic acid test mark 7d at the lower left of the health code is yellow (bright yellowcard), and the passenger cannot provide negative proof of nucleic acid test within 7 days or the boarding reminder at the lower right is marked with an asterisk (with an asterisk code), then the passenger cannot take the bus.
3. Passengers who don't have a smart phone or can't operate a smart phone should take the inter-city bus, in addition to swiping the card or manually registering, they should also carry the pre-printed negative certificate of nucleic acid test within 7 days and the Shandong paper health pass code. If passengers can't provide their negative proof of nucleic acid test within 7 days, they can't take the bus.