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What does two equal signs (==) mean?

A man wearing a mask passes by a board sign banning photography and poster of geisha on Hanamikoji Street on February 10, 2020. The boorish behavior of tourists who have harassed geisha

Message: ♑️📀 〽️⭕️🌱📧 🅿️🕝🌽👖📞€ᔕᔕ, ▶️🅰✓💈↩️/📧♈️🌽👢 ⛽️📧♑️ℹ️👅💰/🏊🌲©Ⓚ, ↩️ℹ️€⚡️📧💺 🅾🌈 ⤴️🌙📍💪📧 ⚡️🎾 ℹ 👐💈👢£ ©🅰♑️🌜📧👢 Ⓜ️🍸 📧🌈💈🎋🌲 🏊🅰®🅰 🅰♑️👌 🅰♑️♑️🌲🅱📧💺💺€ ᔕ📧®ℹ️📧💲

ʎ latin small letter turned y (U+028E) @ Graphemica

≝ equal to by definition (U+225D) @ Graphemica

Equivalents ½ ½ ⅔. - ppt download

ѱ cyrillic small letter psi (U+0471) @ Graphemica

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Compare two solution in a prolog call - Stack Overflow