Based on the production formula of real asphalt, we can consider adding the recipe "aggregate + fine sand + heavy oil → asphalt". This mixture can be produced at a concrete mixing plant and used for road paving to increase truck driving speed. In the game, players often struggle with the management of heavy oil. Burning it directly causes pollution, and converting it into hydrogen consumes additional production capacity. By utilizing this method, we hope to effectively utilize heavy oil without causing unnecessary waste or pollution.