This multimedia file presents advanced modelling results of nonlinear elastic wave interactions in PVC when two initial waves are excited from water using finite dimension sultrasonic sources. The following refferences are linked to this modelling: 1. See https://doi.org/10.1016/j.ultras.2014.11.009 for geometry details; 2. See https://asa.scitation.org/doi/10.1121/1.4861241 for theory of nonlinear wave interactions; 3. See https://doi.org/10.1103/PhysRevLett.121.244301 for theory of nonlinear wave interactions; 4. Modelling method will be presented in IEEE IUS 2019 Symposium, 6-9 October 2019, Glasgow. The work is entitled "Green-Function Method for Nonlinear Interactions of Elastic Waves."