This paper first examines Chinese architects' need integrate their architectural heritage in today's designs. Such a need demands a re-definition of traditional form primarily in terms of its deep structures rather than merely its figural motifs. A method based on phenomenological observation and interpretation is introduced as the major research approach to achieve this redefinition. The main body of the paper describes thirteen "characteristics" or the traditional environment as discovered by this research: (1) separation, (2) division according to the user group, (3) unit as a miniature universe, (4) cooperation between the inside and the outside, (5) major and minor units in a line, (6) linear public open space, (7) articulation instead of transition, (8) collage of the regular and the irregular, (9) separation between the man-made and the natural, (10) two interior seales, (11) simple background, (l2) two dimensional linear image, and (l3) form with a story.