 Los Angeles, California--Newsfile Corp. - July 28, 2021 - The Schall Law Firm, a national shareholder rights litigation firm, reminds investors of a class action lawsuit against Tarena International, Inc. Tarena or the Company NASDAQ: TEDU for violations of 10b and 20a of the Securities Exchange Act of 1934 and Rule 10b-5 promulgated thereunder by the U.S. Securities and Exchange Commission.Investors who purchased the Companys securities between August 16, 2016 and November 1, 2019, inclusive... 