After quitting the Senior Software Engineer job in Motorola Vancouver (Canada), I moved back to Hong Kong around 1999. Then acquired the Certified Cisco System Instructor (CCSI #20388) status and start a new job in GlobalKnowledge network. After few years, I quit my training job and join HP as a project manager for a period of time. However, eventually I decided to quit HP and act as a freelance consultant up to now. Currently, I am still doing training most of the time and also have jobs on network planning, security assessment, data center migration, IP telephony design and dial plan migration etc. Besides teaching Cisco class, I am also a Certified EC Council instructor (for CEH and CHFI course), Certified Juniper Instructor, and start as Certified H3C instructor few years ago. Additionally, certified as a F5 instructor since 2013. Also acquire the knowledge to teach Arista. I work for international training companies such as Training Partners of Dimension Data, Red Education, Fastlane, ITLS etc. Travel around different Asia countries such as Singapore, Malaysia, Taiwan, India etc., also Australia and the States to deliver various kinds of training. After over one and half decade training career, I still enjoy teaching, as I can directly share my experience with people. On the other hand, though I am not doing development in my daily job, as an amateur, I am still working on my open source projects. As I really find that there are so many people making contribution to provide helps for others, I want to be involved. (Bible teaches us not just to take, instead to give). So, eventually decide to create this Blog for sharing my limited knowledge. And most important to also share my personal experience in my life, especially my Christianity life and let the Lord being glorified. Welcome to leave any comments. Feel free to contact me using the Linkedin Profile link on the home page. Last updated on Nov, 2018