diff --git a/fastNLP/core/README.md b/fastNLP/core/README.md
index af0e39c3..8b137891 100644
--- a/fastNLP/core/README.md
+++ b/fastNLP/core/README.md
@@ -1,8 +1 @@
-SpaCy "Doc"
-https://github.com/explosion/spaCy/blob/75d2a05c2938f412f0fae44748374e4de19cc2be/spacy/tokens/doc.pyx#L80
 
-SpaCy "Vocab"
-https://github.com/explosion/spaCy/blob/75d2a05c2938f412f0fae44748374e4de19cc2be/spacy/vocab.pyx#L25
-
-SpaCy "Token"
-https://github.com/explosion/spaCy/blob/75d2a05c2938f412f0fae44748374e4de19cc2be/spacy/tokens/token.pyx#L27