ʻO ka palekana a me ka palekana ka mea nui i ka honua wikiwiki o kēia mau lā. Inā ma kahi ākea, wahi hana, a i ʻole kahi ʻē aʻe, pono ka loaʻa ʻana o kahi ʻōnaehana kamaʻilio hilinaʻi e hōʻoia i ka pono pilikino. ʻO ka hale hana ʻo Ningbo Joiwo aia ma Yuyao City, Zhejiang Province, ʻike i kēia pono a hāʻawi i ka palekana āpau akelepona palekananā hāʻina kamaʻilio. Ua haku ʻia kēia mau ʻano ʻōnaehanakelepona elevatorʻōnaehana ,kelepona lumi maʻemaʻeʻōnaehana,kelepona panakōʻōnaehana, ʻōnaehana kelepona halemai, ʻōnaehana kelepona intercom, etc.