This edited book reflects the state of the art in learner corpus and related approaches to Chinese as a second language (CSL). CSL as a field has flourished in the past few decades due to the increasingly important role of the Chinese language at the world stage, yet studies of Chinese as a second language based on learner corpora have been less well developed due to the limited availability of data and lack of theoretical insights. This book  represents the latest research in this area by 1) assembling a large group of active researchers from multiple international research communities...