The project is a high-end tea house which offers social elites a place of relaxation, gathering, communication and business negotiation. The tea house adopts a membership system which guarantees the privacy of customers, so it is named 【Secret Garden】. Interior design of the tea house applies oriental garden and uses【pavilion】、【bridge】、【pools】、【timber tunnel】and 【trees】. In one corridor space, flow lines are complex and interlocked without order; it also gathers many entrances and exits. So finally we adopt a concept of timber tunnel which combines all the entrances and exits and forms an integral tunnel space. This changes the original defect into a highlighted part of the space.