ISTANBUL Thai authorities have arrested a Chinese executive of a firm in charge of constructing a 30-story high-rise building in Bangkok that collapsed last month during a powerful earthquake centered in Myanmar, The Bangkok Post reported over the weekend. The building's collapse during the 7.7 magnitude quake on March 28 killed 47 people at the construction site and left another 47 missing, according to the Bangkok Metropolitan Administration. Thai authorities announced that Zhang Chuanling, a