The article explores how SPT numbers can be used to assess the risk of soil liquefaction in fine soil. By analyzing data from various boreholes in Ho Chi Minh City, the researchers found a correlation between SPT numbers and the properties of clayey soil. They suggest that SPT numbers can be used to evaluate the liquefaction potential of clay soil layers, instead of relying on other soil properties. The study also looked at how corrected SPT numbers and other data can impact the assessment of liquefaction potential.