[2] Initially they based their propositions on three primary themes: the problem of personal identity, the limits of the individual, and share space in the tu-yo dialectic and that of the natural elements.
[9] Yen and Nan are best known for Developed Bodily Actions on the Cycles of Life, such as birth and transfiguration, and also on the elements of nature: water, earth and air.
They created events that involved the natural landscape of Venezuela, as in "Salinas de Araya," one of their most emblematic works that also inspired the feature film by Margot Benecerraf.
They paid more attention to the inner life and the psycho-physical transformations of their anatomies, acting with self-centered and meditative intensity to slowly recreate the internal and external rhythms in their bodies.
In 1983, in the Alternate Space of the GAN, they installed their video-performance, Transfiguración Elemento Tierra in the framework of the collective exhibition "Autorretrato – The artist as object-subject of art".
In 1985, in the III National Salon of Young Artists of the MACC (an edition dedicated to installations), they participated with Man and Salt, for which they won first prize.
The same installation (expanded) was represented at the La Rinconada Art Museum, Caracas, under the title Symbolism of Crystallization: Man-Salt II the last presentation made by Yeni and Nan in the framework of the exhibition, "Nature in Three Times".
The damp layer of earth that surrounds their faces, and which dries out shows human fragility and at the same time that of the planet, its dangers of drought, infertility and extinction.