Develop Web-Frontend with Angular and write partial end-to-end test, unit test (originally no any test code). Assist colleagues to build Angular development environment and C#.Net core development environment in WSL. (Building time speed up, save more than 15 mins) I wrote Dockerfile and docker-compose to build a project environment (and pack). It helps to build a stand-alone development environment. (before, we connected to the same test-database to develop projects and cause something not convenient.) Parse PDF, and extract data include text and draw command. Then, process data to helpful information with python-pandas. And develop an automatic program. Research Image Processing. Help scan 2d-barcode more easily. (maybe using Machine Learning in Feature)