Reliable. The author of Goose Takes You to Recite Words is Liu Xiaoyan, a well-known postgraduate teacher. She graduated from Shangqiu Teachers College with a bachelor's degree in English and a master's degree in Tsinghua University Law Department. There are less than 2000 core words in the book "Goose Takes You to Memorize Words". The author makes students remember these words through homophones, associations, stories, pictures and root affixes, so this book is very reliable.