yes. Kaiyuan Hotel can use a trademark certificate. The Trademark Law stipulates that a trademark registrant can authorize others to use its registered trademark by signing a trademark license contract. The licensee has the right to use the trademark, and can use the trademark on the approved registered goods and authorize others to use it. Therefore, Kaiyuan Hotel can use the trademark after being approved by the trademark registrant, and can authorize others to use the trademark in a licensed way.