The grammar is easy and character is difficult in mandarin.for basic tense watch the video below https://www.youtube.com/watch?v=joWkZBL-3FE Today we are going to learn the name of some construction vehicle in mandarin.The name can differ from the name in site.Any way it will be helpful for the construction worker. For detail watch the video below https://www.youtube.com/watch?v=5AjjJiRLkew&index=2&list=PLZgWQaoKMJQEMH6oVs1_xVgWR9obsVq1E Introduce yourself and learn some basic mandarin words.For detail watch the video below from native speaker of mandarin https://www.youtube.com/watch?v=QOpQf3fi2N4&t=2s