The kanji 啓 primarily conveys the meaning of "to open," "to enlighten," or "to begin." It suggests a sense of unfolding, revealing, or initiating something, whether it be knowledge, understanding, or a new phase. It often implies a process of making something clear or apparent.

・On-yomi (音読み): ケイ (Kei) ・Kun-yomi (訓読み): ひら（く） (hira(ku) - to open)

⚫︎啓発（けいはつ） Translation: Enlightenment; inspiration; edification. ⚫︎啓示（けいじ） Translation: Revelation; divine revelation. ⚫︎啓蒙（けいもう） Translation: Enlightenment; education; popularization.

I'm sorry, I lack the information to provide correspondence between the origin of the kanji character 啓 and Vietnamese.

The kanji 啓 is a phono-semantic compound (形声文字 - keisei moji). The left side is 戶 which is a simplified form of 戸 (to, door, house), the semantic component that provides the meaning of "door". The right side is 口 (kuchi, mouth), which represents the phonetic component, providing the sound and suggesting the action of speaking, thus opening. Therefore, 啓 represents the action of opening a door or spreading information, beginning something through words.