开启
kāiqǐ · HSK 7
open
🔓 开启 = 开 (open) + 启 (start/begin) — to open up or switch on
开 means open and 启 means to start or initiate, so 开启 is the act of opening or activating something — a door, a switch, a new era. More formal than plain 开.
开 — two hands 廾 + door 门 (open gate)
Originally written 開, showing two hands (廾) lifting the bar (一) off a gate (門) to open it. The simplified form 开 keeps the two-hands element and drops the gate. Core meaning 'to open' extended to 'start, operate, bloom'.