Residuals between APOGEE DR17 and LAMOST LRS calculated based on the effective temperature and surface gravity. The blue dots represent the difference between HRS and the original LRS result, while the orange curve shows the difference between HRS and LRS after correction. The gray-shaded region includes samples with an effective temperature of below 5000 K or above 6500 K and dwarfs with a surface gravity of around 4.5 dex.