Nhtoi a n-gun (refraction) hte diffuse reflection (diffuse reflection) gaw, nta kata na nhtoi hpe hkrang shapraw ai hta ahkyak ai hkum hkrang masa ni rai nga ai. Nhtoi gaw media amyu myu hku lai wa ai shaloi, shi a lam galai mat ai-ndai gaw refraction re; diffuse reflection chyawm gaw nhtoi hpe maren mara garan ya nna, nhtoi htoi ai hpe koi ya ai. Ndai optical properties lahkawng hpe dai ni na aten na mawn sumli nhtoi hta grai lang ma ai, grau nna neon-type nhtoi htoi ai jak ni hta grai lang ma ai. Special material shell hte kata na LED nhtoi hpe kayau kaya lang ai hku nna, nhtoi gaw ntsa kaw katsi katsang shabra wa nna, myi man hpe n-gun n jaw ai sha, contour ni hpe madi madun dan ai. Ndai hpaji masa hte aesthetics hpe kayau kaya galaw ai majaw, grup yin nhtoi hpe masha ni ra sharawng wa ai a madung lam rai nga ai.
Dai lwi nga ai lachyum ni gaw, hka leng ni hte surfboard ni a hkrang sumla ni hpe madun dan ai. Shana aten hta nhtoi htoi tu ai shaloi, blue-purple nsam ni gaw panglai hkin-gau ting hpe nta kata de woi shang wa ai zawn rai nga ai. Balcony hte yup gawk bunghku ni hta noi na matu sha n-ga, dunghkum ntsa kaw tawn da ai shaloi, shara langai a style hpe pyi kalang ta sharawt ya lu ai. Ngai hpe grau mau shangun ai gaw, shi a n-gun n law ai -design; aten galu lang ngut ai hpang mung grai n katsi ai majaw, shim lum ai hte n-gun-hpe n jai lang lu ai. Katsi katsang re ai nta hta rai tim, shim lum ai coffee lu sha ai shara hta rai tim, ndai pyengdin gaw shi a nhtoi htoi tu ai hte nbung laru a labau hpe tsun dan lu ai. Nhtoi htoi tu shagu, tsan tsan kaw nna hka hkin gau ntsa e hka leng ni hkrat wa ai nsen hpe na ai zawn rai nna, dai hte maren nye a myit masin mung htoi tu wa ai.
