正如
zhèng rú · HSK 5
just as
正 = exactly/upright + 如 = as/like → 'exactly as'
正 carries the sense of 'precise, correct, straight'; 如 means 'like' or 'as'. Together they form a formal connector meaning 'just as' or 'precisely as', often used before stating something parallel or confirmed.
正 — one 一 + stop 止
Originally an ideograph showing a foot (止) advancing toward a target line (一), meaning 'to march straight toward' a city or goal. From this came the senses 'upright,' 'correct,' and 'proper.' The military sense survives in 征 (to campaign), which took over the original 'march' meaning.
如 — woman radical 女 + mouth 口
Originally a phono-semantic compound where 女 (woman) suggested compliance and 口 (mouth) indicated speaking or following orders. The early sense was 'to follow' or 'to comply with what is said,' which extended to 'to be like' or 'as if.' Modern uses like 'if' and 'such as' grew from this comparative meaning.