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In page Ding Yiping:

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Ding was groomed to be the candidate for Commander of the PLA Navy.[3] He had comparable command experience as Admiral Wu Shengli but was six years younger, and became an alternate Central Committee member five years before Wu. However, Ding was penalized following a fatal accident with the Type 035 Ming-class submarine 361 on April 16, 2003.[3][4] Its entire crew of 70 men perished, though the submarine was later salvaged. In the accident's aftermath, Ding was demoted by one grade to deputy chief of staff of the Navy, removing him from contention. Wu eventually became the PLAN commander.[3][4]