The unremarkable dark brown seed, the big sea, is actually a "voice protection wonder" with astonishing energy. With just a cup of hot water, it expands and unfurls like magic, blooming with crystal-clear and soft flesh like the sea, and instantly releasing its refreshing and sweet essence. It is specially designed for hoarse throats, capable of quickly clearing heat, moistening the lungs, soothing the throat and improving the voice. It can be regarded as a throat-soothing tonic for teachers, singers and those who stay up late. At the same time, it is more gentle and moistening, quietly soothing the body's heat and dryness. When a cup is swallowed, it seems to bring a nourishing spring rain to the parched respiratory tract.