Complete the following sentence: Since Chinese migration to Portugal greatly increased since the 1950s, the community's population has been categorized based on migration waves and purpose. Since Chinese migration to Portugal greatly increased since the 1950s, the community's population has been categorized based on migration waves and purpose. Since Chinese migration to Portugal greatly increased since the 1950s, the community's population has been categorized based on migration waves and purpose. ️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️ ️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️ Macau Chinese arrived in Portugal primarily as professional workers and students or due to family and career ties with the country.<unk> Macau Chinese arrived in Portugal primarily as professional workers and students or due to family and career ties with the country. <unk> <unk> <unk>
Macau handover to China in 1999.<unk> Macau handover to China in 1999.