Sungyn Neighborhood Park primarily supports Korean; English and other language assistance details are not specified.

• Language confirmed: Korean
• No documented English signage or staff support
• No audio guides or visual aids with language options available
• Park is a local Seoul attraction with standard public amenities
• Check with local Seoul tourism info for possible English orientation materials

Based on language_support.korean=true with all other language fields null, and accessibility fields (audio_guide, sign_language_guide, etc.) all null. No canonical English name available. Limited data on multilingual services; recommend contacting Seoul tourism office directly.