Wèi / le / zhèng / míng / zì / jǐ / méi / cuò， / tā / jìng / rán / bǎ / zhèng / jù / quán / shān / le， / zhēn / shi / yú / bù / kě / jí。

为了证明自己没错，他竟然把证据全删了，真是愚不可及。

To prove he was right, he deleted all the evidence, which was incredibly stupid.