During August 2025, Liqin Rae focused on backend reliability in the trinodb/trino repository by addressing a critical bug in partition management during table alterations. Using Java and database management expertise, Liqin replaced hash-based set difference logic with strict equality checks to ensure partition fields were preserved, preventing unintended data loss when altering partitioned tables. This technical approach improved the stability and safety of DDL operations, reducing the risk of corrupted partitions and supporting safer schema evolution. The work demonstrated careful attention to data integrity and code quality, with clear, self-contained commits and thorough documentation of the rationale behind each change.