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This study aims to examine co‐occurrence patterns of depression and anxiety among Chinese adolescents and their associations with various forms of peer victimization. We collected longitudinal data from 1005 middle school students using the Multidimensional Peer Victimization Scale, Center for Epidemiological Studies Depression Scale, and State‐Trait Anxiety Inventory. Then we conducted latent profile analysis, latent transition analysis, and logistic regression analysis. The results reveal the presence of three depression‐anxiety profiles among participants: low depression‐anxiety group, moderate depression‐anxiety group, and high depression‐anxiety group. As verbal and relational victimization increase, adolescents are more likely to transition to a higher level of depression‐anxiety profile. However, an increase in physical and property victimization predicts a transition to a lower level of depression‐anxiety profile. The diverse effects resulting from different forms of victimization exhibit gender differences. For boys, an increase in relational victimization made participants in the moderate depression‐anxiety group more likely to transition to the high depression‐anxiety group, whereas this effect was not significant among girls. This study is theoretically significant for understanding the link between depression, anxiety, and their influencing factors. It suggests that educators, while addressing verbal and relational harm in adolescents, should reconsider the potential impact of physical and property harm. Opportunities to transform negative events into positive ones should be explored. Educators should tailor their focus based on gender, with a particular emphasis on addressing relational harm among male students. This underscores the need for differentiated approaches to effectively support students. [ABSTRACT FROM AUTHOR]

The bearing capacity of the phyllite soil subgrade can be greatly improved by red clay, but the water stability of the modified soil is still poor. Hence, the blended soil has been found to be unsuitable for the construction of high-speed railways. This paper proposes an innovative scheme, by adding appropriate amounts of cement and red clay concurrently, to improve phyllite soil, which achieves a higher bearing capacity of the subgrade immediately after compaction, while also solving the problem of insufficient water stability. Laboratory tests of the permeability and disintegration characteristics of phyllite soils improved by cement, red clay, and both were carried out. The test results show that the permeability coefficient and maximum disintegration rate of soil can be improved effectively by using both red clay and cement. It was found that the optimal combination scheme is to add 3% cement and 40% red clay to phyllite soil by mass. Under the optimal scheme, the permeability coefficient, maximum disintegration rate, and disintegration rate of the improved soil decreased by 90.02%, 90.30%, and 99.02%, respectively, compared with the phyllite soil. The microscopic study shows that the mechanism of red clay blending with phyllite is that the finer particles of red clay infill the pores among the phyllite particles, thus reducing its permeability coefficient. The mechanism of adding cement to the blending soil mainly results from the production of hard-setting new materials and the formation of a cementation network among the soil particles, which not only increases the shear strength of the soil, but also reduces the permeability coefficient and the maximum disintegration ratio of the soil. This work makes full use of the complementary characteristics of red clay and phyllite soil and the advantages of hard-setting new materials, which will provide a new idea for soil improvement of the phyllite soil in the future. [ABSTRACT FROM AUTHOR]