- Fig. 1. The top document shows the style of repertoire records kept between 1949 and 1958; the top notes the year and genres (in this case, a mix of Peking and Kun opera troupe repertoires from 1957), while the left sidebar notes the troupes. The bottom document is a “bird’s eye view” of the repertoire. While the categories and precision of those categories change over time, the format remains relatively consistent. From left to right, the columns denote genre, number of troupes active, overall number of scripts, number of plays on contemporary themes, number of traditional plays, foreign plays, and then the percentage of the repertoire made up of plays on contemporary themes. Source: SMA B172-4-917 & SMA B172-1-326.