hand slides and vibrato are used frequently and tremolo is done with the thumb. Meanwhile, Shandong songs are "glamorous...melodic lines often rise and fall dramatically...Its music is characteristically light and refreshing.” Slide descending notes are not used as often as Henan. Glissandos are always on beat. Southern China Southern styles include Chaozhou and Kejia (Hakka) regional styles. Another prominent school is the Zhejiang regional school in the southeast. Southern songs include "Jackdaw Plays with Water" (Han Ya Xi Shui) from Chaozhou and "Lotus Emerging from Water" (Chu Shui Lian) from the Hakka School. Famous songs from Zhejiang include "The General's Command" (Jiang Jun Ling). Chaozhou and Hakka songs are similar but according to Mei Han, “Hakka melodies are similar to but less highly embellished than those of the neighboring Chaozhou school.” Songs from Chaozhou use even less descending notes and glissando are free rhythm. Chaozhou songs have "irregular beats, and alternate between hard and soft taps on the strings." Zhejiang songs use technique similar to the Pipa. Frequent tremolo is used with left-hand glissando. Other techniques include sidian, where 16th notes are played used thumb, index finger and middle finger in quick tempo. The guzheng is played on a pentatonic scale, with notes "fa" and "ti" being produced by bending the strings. The scale can change with using "flat", "natural" and "sharp" notes. Chaozhou songs use multiple scales, using both "flat" notes or both "natural" notes. The tone of the song can change based on the scale. Modern music Many pieces composed since the 1950s have used newer techniques and also mix elements from both northern and southern styles, ultimately creating a new modern school. Examples of modern songs include "Spring on Snowy Mountain" (Xue Shan Chun Xiao) by Fan Shang E, and "Fighting the Typhoon" (Zhan Tai Feng) by Wang Changyuan. Newer techniques (especially since the 1950s) have included playing harmony and counterpoint with the left hand. Experimental, atonal pieces have been composed since the 1980s. For example, "Ming Mountain" (Ming Shan) and "Gloomy Fragrance" (An Xiang) are contemporary songs that do not use the traditional pentatonic scale. In 2021, Chinese/Australian guzheng composer and player Mindy Meng Wang collaborated with Australian electronic musician Tim Shiel, releasing a single, "Hidden Qi 隐.气", in February, followed by an EP, Nervous Energy 一 触即发, in March of that year. She has previously collaborated with British band Gorillaz and Australian band Regurgitator, and