<span style="color: #222222;">In an unusual move, China today issued a travel for its citizens visiting the US, warning them of harassment and public security issues in the country as bilateral ties touched a new low amid a spiralling trade war. The warning came a day after China cautioned its students against going to the US for studies.</span><br />'' <span style="color: #222222;"><br />'' China's Ministry of Culture and Tourism issued the travel for Chinese tourists travelling to the United States. Noting the frequent occurrence of shootings, robberies and theft in the United States recently, the ministry warned Chinese tourists to fully assess the risks of travelling to the US.<br />'' The state-run Xinhua news agency reported that the travel is valid until the end of this year. </span><br />'' <span style="color: #222222;"><br />'' Last year, the number of Chinese tourists visiting the US fell for the first time in 15 years, after more than a decade of rapid growth, amid the trade friction between the two countries. The two countries have been locked in an escalating conflict over trade for the past year.</span><br />